Even though he's been married for almost a year, Tim is horny most of the time and jacks off in front of his computer quite frequently. He loves his wife. They grew up together, have always been best friends and are compatible in every way, except sex.

Tim has the libido of a healthy 26-year-old male, but unfortunately his wife, Sharon, was raised to believe that sex is dirty and disgusting, something only done as a monthly obligation. It was drilled into her, from the time she was old enough to understand; only tramps and whores enjoy sex.

In every other way Sharon is the perfect wife. They enjoy the same music and movies, they never fight and they love just hanging out together. The sexual hang-ups and inhibitions are so deeply rooted, that after a year of trying to change her, Tim has finally resigned himself to accept who she is and just enjoys her as much as he can during their monthly ritual. His frustration is compounded by the fact that she is beautiful, with a nearly perfect body.

Sharon and Tim dated in high school, and then lost contact when each left town to go to college. They resumed their relationship a couple of years ago when they both became teachers, back in their hometown. They dated for a year and Tim respected Sharon's wish to 'save herself for marriage' naturally assuming things would change after the wedding. Because he can't imagine loving anyone else, Tim has never even considered divorce. He's thought about fucking around, but the opportunity has never presented itself, at least, not the right opportunity.

As a handsome young high school teacher, Tim has his share of female students who have made it obvious they wouldn't say no, but he won't cross that boundary. That doesn't mean their nubile young bodies, with their raging hormones, don't invade his fantasies. He frequently gets himself off, imagining one or more of these sexy 18 year olds sharing his bed. But it's only a fantasy.

Surprisingly, his first real opportunity for some extra marital sex comes unexpectedly from his sister-in-law. He gets his first hint of it at a dinner party, at Sharon's parent's house.

Other than their hang ups about sex, his wife's family is generally okay. Tim and Sharon see them every Sunday at church and then have dinner once a month at their house. The dinner parties usually include Sharon's brother, Paul, and his wife, Rhonda. Paul and Rhonda have been married about two years and neither family has any kids. Not surprising to Tim, given the family's sexual hang-ups.

After dinner, the conversation generally turns to either religion or the declining sexual mores in our society. Rhonda and Tim usually sit quietly while their spouses and their parents passionately agree with each other, citing biblical references from memory as they expand on each other's ideas and pool their narrow-mindedness. For some reason, on this particular night Tim finds himself not wanting to listen to their diatribe. He excuses himself and steps out onto the deck for some air. Their discussion is so intense; they don't even notice his absence.

Standing there, leaning on the railing, Tim sucks air into his lungs as he thinks about Keisha, a beautiful, young 18-year old black student in his senior chemistry class. He closes his eyes and tries to visualize her naked body, imagining dark nipples and guessing whether her pussy is trimmed or natural. His cock stirs as he thinks about her thick lips and how they would feel...

"Mind if I join you?" His thoughts are interrupted as Rhonda steps out on the balcony and lights a cigarette. Tim moves his leg, so his sister-in-law doesn't see the bulge in his pants as they stand beside each other gazing out over the balcony, enjoying the peace and quiet.

"Not at all," he smiles.

"As hung up as they are about anything sexual, it's a wonder they ever had kids," Rhonda says, taking a drag on her cigarette and blowing the smoke out over the railing.

"I know what you mean," he laughs. "I just wish they hadn't instilled so many of their hang ups in their kids," he adds, without meaning to disclose so much.

"You too?" she asks, raising her eyebrows.

"You know, I just meant," he stutters. What did he mean?

"It's okay." She touches his arm. "I understand. Paul's a wonderful man and he treats him like a princess, but sometimes..." Her voice trails off as she shrugs and stamps out her cigarette.

"We'd better get back," she says.

Tim watches her ass sway inside her skirt as she walks ahead of him into the house. He's never thought of his sister-in-law sexually before, but he swears she's adding a little extra swish to her walk today. So her sex life isn't any more exciting than his. Interesting.

Sharon and Tim had long ago fallen into a routine of having their monthly sex after the dinner party at her parent's house. It is perfunctory sex, with no foreplay and no variety. Sharon goes into the bathroom, brushes her teeth and lubricates herself, from a tube. He's already in bed naked, when she crawls under the covers before removing her nightgown. She lies on her back and spreads her legs as he positions himself over her.

With erotic thoughts of his sister-in-law making him hard, he penetrates his wife's artificially lubricated pussy. As always, he's gentle and loving, still hoping for a reaction that never happens. As he feels her warmth envelope him, he mechanically pumps in and out while visualizing the sway of his sister-in-law's firm ass. He has a momentary flash of Rhonda's face, contorted in ecstasy, and her voice urging him to fuck her harder.

"Come on, Tim!" he hears her moan. "Fuck a woman like she needs to be fucked!" He complies with her wishes, slamming his hard cock into his wife's pussy while visualizing his sister-in-law lying under him. He vaguely hears his wife's surprised gasp as his body's urgency takes over and he drives his cock deep into her unsuspecting pussy.

He rocks faster, his chest pressed into his wife's tits and he can't help but think about Rhonda, wondering what her nipples would feel like rubbing against him. He envisions her face and lowers his mouth towards her moist lips. Before he can complete the kiss, his cock explodes, bringing him back to reality. As his hot cum spews into his wife's pussy, he notices the confused look on her face.

"I love you," he whispers as he kisses her tenderly on the lips, before disengaging his spent cock and rolling off of her.

"I love you, too," she sighs as she gets up and goes to the bathroom to shower away any evidence that they actually had sex. This is part of the ritual too, but tonight she forgets to put her nightgown back on and he is treated to the sight of her naked body as she hurries into the bathroom. His cock starts recovering immediately as he wonders how Rhonda's body compares to his wife's. Rhonda is about two years younger and from what he has seen has a killer body. He falls asleep dreaming of his sister-in-law.

Sharon lets the tears run down her cheeks as the water cascades over her body. She hates having to just lie there and not respond to Tim's lovemaking, but it's for his own protection. She can't bring him into her wickedness and curse him too! She loves him too much!

As she lathers soap over her body and his seed runs down her thighs, she continues to cry, remembering that awful night back in college, when she caused herself and her brother Paul to be cursed into damnation.

She had gone to a party with a guy she had been dating. Frustrated by his lack of progress with her sexually, he had bought a powerful sex drug from the campus pharmaceutical expert and slipped the aphrodisiac into her drink.

Paul was studying for a theology test or he'd have been at the party, too. Around midnight Sharon's boyfriend called him.

"Man, I really fucked up, Paul!" the boyfriend said.

"Where's Sharon?" Paul asked immediately, always protective of his sister.

"Man, I was just trying to loosen her up some, you know, melt her defenses a little." Paul, found out later that he had used three times the recommended dosage of the sex powder.

"Where is Sharon?" Paul yelled into the phone.

"She's out of control, man! She's dancing naked in the middle of the common room with all these guys cheering her on."

Paul ran the two blocks from the apartment he shared with his sister, to the frat house. Bursting through the door like a madman, he slammed the boyfriend against the wall, punched his face and kneed his groin, before pulling his naked sister from the room. Grabbing her dress on the way out, he didn't bother looking for her bra, shoes or panties as he led her outside. They stopped beside the house so she could get dressed.

Her drug-induced sexual arousal made it difficult for him to get her dressed. He yelled, begged and bargained with her to put her dress on. Paul was out of his mind, looking at his naked sister. This was so wrong! He kept repeating scripture to himself as he tried to get her to put her dress on.

"He hath uncovered his sister's nakedness; he shall bear his iniquity," he whispered repeatedly as her perfect breasts brushed against him when he tried to get her dress over her head. "He hath uncovered his sister's nakedness..." Sharon is not helping.

"I'm so hot, Paul," Sharon pleads. "Don't make me get dressed," she whines, while running her hands over her breasts and tweaking her hard nipples. "I'm burning up inside" she slurs, while her hands glide over her hips and she thrusts her pussy towards him. "Please make the burning stop."

"He hath uncovered his sister's nakedness; he shall bear his iniquity," Paul whispers as his cock stiffens, tenting the front of his sweatpants. Paul is aggravated, embarrassed and aroused, all at the same time. "You have to get dressed!" Paul insists. "You can't walk home naked!" Sharon abruptly pulls away from him and runs a few feet away.

"Please!" she begs as she starts swaying her hips and running her hands seductively over her body. "You have to help me, Paul," she pleads again. "Or let me go back inside," she says defiantly. Paul takes in the forbidden sight of his naked sister, his eyes lingering on the light blonde triangle of pubic hair and he can't control the reaction of his manhood.

"And if a man shall take his sister, and see her nakedness, it is a wicked thing; and they shall be cut off in the sight of their people: he hath uncovered his sister's nakedness; he shall bear his iniquity. Leviticus 20:17," he shouts at his sister. "Snap out of it Sharon!" he yells as he steps closer to her. "Snap out of it!" But there was no snapping her out of her drug-induced sexual arousal.

"Help me, Paul!" she pants as she throws her arms around his neck and presses her naked body against him. "I'll get dressed if you promise to help me when we get home," she whispers, while clawing his back and grinding her exposed pussy against the bulge in his pants.

Paul has always looked up to, and looked after, his older sister. He loves her like he loves no one else in the world. He doesn't know what to do. Her skin is warm to the touch and her naked lustfulness is torturing him. He has to get her home.

"Okay," he says, trying to peel her body away from his. "Now get dressed," he says, tossing her dress to her.

"Promise?" she whispers, her breasts heaving as her breath comes in gasps. Her hard nipples are jutting out towards him as he answers. Even though he knows better, he can't seem to avert his eyes.

"Yes, I promise," he answers, not sure exactly what he's promising, but just trying to get his sister dressed. In weak moments, Paul has had impure thoughts about his older sister, imagining her nakedness as he lies in bed at night. Now, here she is; standing before him, fully aroused and completely naked. His cock aches at the sight of her smooth skin in the moonlight.

Her breasts, the size of small melons, are capped with perfectly round half-dollar sized areolas and thick, taut nipples. He can't take his eyes off of her as she steps back and slips the dress over her head. Without a bra, her hard nipples poke at the thin material of the sundress.

"Come on, then!" she grabs his hand and pulls him with her as she runs to their apartment. Inside the apartment, he closes the door and she turns towards him.

"You promised," she reminds him, pulling her dress over her head and dropping it on the floor. Stepping towards him, she grabs the bottom of his shirt and tries to pull it over his head. Paul stops her, holding her wrists.

"You need to sleep this off," Paul says, letting go of his sister's arms and walking ahead of her towards her bedroom. Pulling the covers back he points to her bed. "Sleep this off and we'll talk in the morning," he says, afraid to look at the tempting sight of her mouthwatering body.

"Stay with me," she whispers. "I'm still burning up. Hold me, please," she begs as she lies down on the bed. Paul looks at his naked sister as she moves over to give him room to lie next to her.

"Just until you fall asleep," he relents, lying on his back with his arms at his sides, afraid to look at her or get too close to her warm flesh.

"Paul, the burning itch is getting worse," she says, wrapping herself around him. "It's inside me and it's like nothing I've ever felt," she says, draping her leg over his thigh and rubbing her naked pussy against his hip. "You promised to help me," she pleads, clawing at his clothes as she humps his leg. Sharon can't help her actions; her pussy is on fire and she has to quench it. She has no experience with this extreme wetness or the intense burning inside her aroused pussy.

As children, Paul and Sharon were told in no uncertain terms that masturbation is a sin and they would burn in hell if they played with themselves. Sharon took this literally and has never touched herself or let anyone else touch her. Now her insides are burning hot and wet.

"Cursed be he that lieth with his sister, the daughter of his father, or the daughter of his mother. Deuteronomy 27:22," Paul whispers as Sharon tugs at his sweat pants and he grabs her hand to stop her.

"You promised," she cries, tears streaming down her cheeks as she slips her fingers under the waistband of his pants. Paul gasps when his sister's slender fingers encircle his throbbing cock. He also took his parent's warning literally and his only transgressions have been the occasional wet dream, fueled by his impure thoughts of his older sister.

"Cursed be he that lieth with his sister..." Paul repeats, his voice shaking and his body trembling with both fear and arousal.

"Cursed be he that lieth to his sister when he promises to help her!" Sharon says, squeezing his cock while pulling at his sweat pants with her other hand. "Please! Please! Please! I can't stop the burning itch!" Sharon cries in agony. Paul can't stand to see his sister tormented and his cock is about to burst. He pushes her onto her back and pulls his shirt over his head. Hesitating, he stares at his sister's naked body as she spreads her legs invitingly.

"God forgive us, Sharon!" he says, tearing his sweat pants off and positioning himself over his sister's trembling body. "This is a sin!" he argues, making one final attempt to dissuade her as his throbbing cock probes her wet pussy lips.

"Just do it! Do it! Hurry!" Sharon pleads, pulling her brother down onto her.

Sharon gasps when Paul's hard cock penetrates her opening and enters her virgin pussy. The fire is torturous and his cock is about to provide the relief she needs. He's barely inside her and she's clawing at his back and moaning.

"Oh yes, Paul!" she cries. "More! Please! More!" she's digging at his back and spreading her legs as wide as they'll go.

The feeling of his sister's pussy closing around his cock is overwhelming to Paul. He's never felt anything like this. He pulls back slightly and plunges forward, trying to push his thick cock into her snug, virgin pussy. As slippery as she is, he frustratingly is still only halfway in. Pulling almost all the way out, he pushes her thighs wide open and thrusts his hips forward, jamming his cock deep inside her hot, wet hole.

Sharon is so aroused and out of control, that when her brother's cock breaks through her virginal barrier, the pain barely registers. She squeezes him tightly and rocks along to his awkward rhythm. Their shared inexperience does not diminish the fiery pleasure that surges through their bodies.

"Ohmygod!" she screams as her brother starts pounding into her more assuredly. Paul is oblivious to anything except the tight, hot sheath enveloping his cock. His brain has shut down and he is functioning on pure animal instinct as he starts mauling his sister's tits and kissing her lips.

"Oh Sharon!" he moans. "It's like nothing I've ever..." His voice trails off as the tension builds in his balls and his breath comes in short gasps. He's out of control, fervently slamming his cock into his sister's sizzling pussy.

"Ohhhhhhhhhhhhhhh!" Sharon screams as an orgasm unexpectedly rips through her body with a thunderous roar. She shakes and shivers, squeezing her pussy muscles around her brother's cock, triggering his release. She's never felt anything like this either.

"Aaaaarrrrrrgggghhhhh!" Paul groans as he thrusts one final time, shooting his first load of cum inside a woman's pussy. His pleasure is unknowingly intensified by the fact that his heavy load is being deposited deep inside his sister's virgin pussy. Jerking spasmodically, he spews several smaller spurts before collapsing on her soft tits.

Sweat-soaked and breathing heavily, they hold each other's trembling body, with neither of them speaking or moving. Scared and exhausted, they finally fall asleep in each other's arms; Paul's spent cock resting comfortably inside Sharon's newly deflowered pussy.

Sharon wakes up first. Her brother's naked body, entangled with hers, brings back the events of the evening before. It's all a drug filled blur, from the party to her brother reluctantly taking her virginity. She remembers feeling blissfully content at the end of it all but can't recall specific details.

"You awake?" Paul asks, not opening his eyes.

"Yes," she says quietly.

"I'm sorry," he says, trying to disengage himself from his sister's naked body.

"No!" Sharon blurts out. "It was all my fault ... the party ... I begged you ... I remember!" she exclaims.

"You were drugged!" Paul shouts. Seeing her confused look, he explains about the aphrodisiac powder.

"I should have been stronger. We're cursed, you know," he says quietly. "Cursed be he that lieth with his sister, the daughter of his father, or the daughter of his mother. Deuteronomy 27:22," he quotes, locking eyes with her. "I'm so sorry, Sis." Tears are streaming down his cheeks and Sharon reaches over and pulls him to her, cradling his head against her naked breasts.

"What does that mean?" she asks, combing her fingers through his hair as he cries. "To be cursed, I mean."

"I'm not sure," he sniffs. "I'll have to do some research to find out what the penance is for..." he chokes back a cough, "for incest," he breathes quietly, sniffing back tears. Sharon is holding him and stroking his back. She likes the feel of his face against her breasts and her nipples respond, pushing into his cheek.

"Paul," she says, hesitantly, "how did it feel, for you?" She holds his face tightly against her taut nipple as she awaits his answers. Several minutes pass before he speaks.

"Heavenly, Sharon," he finally whispers. "No wonder it's the original sin and the ultimate temptation," he laughs nervously. "When I ... um ... I mean, when we ... it was so ... all completely consuming. It's hard to describe." They lie quietly for a minute.

"What about you?" he asks, shifting his cheek and noticing her hard nipples for the first time.

"I was pretty out of it," she admits, pushing her nipple closer to his mouth. "I remember how blissful it felt at the end; like fireworks were going off deep inside of me, shooting pleasure rockets all through my body." Her pussy is starting to send arousal signals to her now as she rocks her tits against her brother's face.

"Yeah," Paul agrees, "that pretty much sums it up." His lips brush her sensitive nipple as he speaks. "I'm so sorry," he says trying to move away from her.

"Don't," she says, pulling his face back to her tits. "We're already cursed, right?" she laughs.

"What do you mean?" he asks, wondering what she could be thinking.

"I mean, we're cursed whether we did it once or more than once, right?" she asks, her pussy anxiously wanting that blissful feeling again. She's opening and closing her legs, rubbing her thighs together.

"Sharon!" Paul exclaims, sitting up abruptly, and pulling back from her. "Do you realize what you're saying? We've sinned! We've committed incest! We're cursed!" He shakes his head, and stares at his sister's naked body, her hard nipples drawing his eyes to her firm, young tits. His cock betrays his outrage, stiffening at the sight of her glistening pussy lips surrounded by her matted pubic hair.

"If we have to do penance for something sinful, I should at least be able to remember it!" she retorts, staring at his cock as it hardens before her eyes.

"Wow! That whole thing was inside me?" she asks, moving closer to watch his cock growing more erect.

"Sharon!" he says, trying unsuccessfully to cover himself, "this isn't a game."

"I know," she says, seriously. "But you are going to spend the rest of your life worried that you took advantage of me while I was high on some aphrodisiac powder. You think this is all your fault." She reaches for his hard cock.

"We are both to blame," she continues, wrapping her fingers around his thick shaft. "We are both cursed," she says, stroking her hand up and down the length of him, "and I want to know what this feels like, before I start doing penance." She pushes him down on his back while her hand continues to stroke his cock.

"Sharon," Paul moans as his body responds to her touch. He should be strong and tell her to stop but it feels so damn good! He watches his sister's tits bounce gently as she swings her leg over him. She's right; they are already cursed.

"This was all inside of me, huh?" she asks, laughing nervously as she positions her wet pussy over his fully erect cock. "Okay, here goes," she smiles and lowers herself onto her brother's thick shaft. Paul just watches, mesmerized by how her lips stretch to accommodate his girth. When the wet heat of her labia engulfs his cockhead, he sighs heavily, leaning back and closing his eyes. Absolutely heavenly!

"Ahh! Ahhh! Ahhhhh!" Sharon moans as she pushes more and more of her brother's big beautiful cock into her enflamed pussy. It feels like nothing she's ever imagined. So full ... so tantalizing ... so completely beyond description. When her wet pussy lips finally touch the base of his cock, she stops moving and squeezes her vaginal muscles as she squirms around to get comfortable.

"Ohmygod! Sharon!" Paul cries, his eyes bulging at the sight of his sister impaled on his throbbing cock. He instinctively reaches for her tits, caressing and teasing as she starts rocking back and forth. All thoughts of penance are forgotten as the siblings lose themselves in the pleasure of their forbidden love.

Sharon rides him like a wild woman, bouncing so frantically on her brother's cock that she almost bounces off. Her drenched pussy flies all the way to the tip before slamming down around his shaft, sending shivers of pleasure throughout their bodies.

"Oh Paul!" she cries but her brother can't hear her over his own moans. Paul has never dreamed of anything remotely close to this. The pleasure is excruciating and he is about to burst. His sister's fiery pussy continues to assault his throbbing cock and he squeezes her tits tightly as he jerks his hips off the bed.

"Oh! Sharon!" Paul screams as she drives them both to explosive, rocket launching orgasms. She clamps her vaginal muscles around his cock as it spasms inside of her, spewing its hot liquid into her pulsating hole.

Collapsing on his chest, Sharon kisses her brother passionately as she bathes in the blissful afterglow of her release, unaware that it may be the last orgasm of her life.

Sharon spends several days trying to seduce her brother into more incestuous lovemaking but Paul refuses any further advances, admonishing her for wanting to live a sinful life.

True to his word, Paul does his research and uses the convoluted logic that has been drummed into him since childhood to arrive at the appropriate penance. Neither one of them, he explains to Sharon, can ever enjoy sex again. They can marry and fornicate for procreation but they can never again experience the blissful feelings they achieved during their incestuous sins.

They vow their penance to each other, Paul changes his major from theology to business and they never speak of it again.

When Sharon returns to her bed, Tim is sleeping peacefully. She slides in on her side of the bed, wishing that for just one night she could forgo her vow. But she is strong and unwilling to bring her curse onto her husband.

As she lies next to him, she remembers the scripture her brother cited so long ago. "If a woman profane herself by playing the whore, she shall be burnt with fire. Leviticus 21:9." He also added. "A man shall not take a wife that is a whore, or is profane. Leviticus 21:7." As she falls asleep, she renews her vow; she will not be a whore, Tim doesn't deserve to be cursed.

In the weeks following the dinner party, his sister-in-law starts occupying most of Tim's sexual fantasies. Every Sunday at church, Rhonda smiles and winks at him from across the aisle. He can't tell if it's his imagination or if she's actually flirting with him. He thinks his fantasies are making him read more into her smile than she intends. At the next family dinner, he makes sure to go out on the deck again, hoping she'll join him. Several minutes later he's not disappointed.

"How's it going?" she asks, raising her eyebrows as he lights her cigarette. "Any luck in breaking through the sexual inhibitions?" she asks without preamble.

"Uh ... no," he answers, staring at her. "How about you?" The more he sees Rhonda, the more appealing she looks. Tonight she's wearing a tight skirt that shows off her firm round ass cheeks and a pull over blouse stretched across her ample tits.

"The same," she says. "He's so gentle and caring, but sometimes a girl needs more, you know?"

"Yeah," he whispers, wondering where this is going. Tim has always liked Rhonda, but they've never had a conversation like this before. Maybe she's as frustrated as he is and wants someone to confide in.

"I don't want to leave him but I don't want to live like a nun either," she says. "It's not that I don't get propositioned. I could cheat in a heartbeat, but there's no one that I'm interested in or trust enough..." Her voice trails off.

"I know what you mean," he tells her, his cock stirring at the possibilities that this conversation provides. She looks up at him, just staring, like she's making up her mind about something.

"I've seen you watching me in church," she says, moving closer to him. "You don't look like you're thinking sacred thoughts."

"I'm not," he answers, looking down at her as she stands inches from him. Her breasts swell against the fabric of her blouse when she takes a deep breath.

"Maybe we could help each other, you know, and keep it in the family," she blurts out, reaching her hand out towards his waist. He nervously jumps back and looks around to make sure no one else is here.

"Don't worry," she laughs. "I'm not going to attack you out here." Reaching out again, she unclips his cell phone from his belt. "I just want to program my number into your phone," she says, flipping it open and punching numbers. "This is for my company Blackberry. It's on twenty-four seven and I'm the only one who can retrieve the messages. Text me if you want to get together." She smiles and hands him back his phone just as Sharon and Paul walk out onto the deck.

That night as he fucks his wife's unresponsive pussy, Tim can't stop thinking about his sister-in-law. As he rams his cock faster, he remembers the curve of Rhonda's breasts and imagines sucking on her aroused nipples. He starts pounding harder as he recalls the swaying of her round ass cheeks and fantasizes cupping his hands around them, digging his fingers into her soft flesh. She's actually invited him to cheat with her! A sudden burst of moist heat emanating from his wife's pussy shocks him out of his fantasy and his cock erupts with a more intense orgasm than he's had in a long time. He stares into her face as he catches his breath, looking for some small sign of pleasure.

"You're starting to get a little rough, aren't you?" she asks, pushing him off of her and grabbing her nightgown as she heads into the bathroom. He doesn't even bother to watch.

While his wife's in the shower, Tim grabs his cell phone off the dresser and sends Rhonda a text message.

He learns that Rhonda will be out of town for two weeks and they arrange to get together when she gets back. The time drags by and Tim starts second guessing his decision. Should he really be cheating on his wife? Is Rhonda the right choice? What if they get caught? His indecision morphs into lustful fantasy and by the time Rhonda gets back in town he can barely wait to push his cock into a responsive pussy.