My Wife's Sister

by lizipicka

Caution: This Sex Story contains strong sexual content, including Ma/Fa, Consensual, Cheating, InLaws, Oral Sex, Masturbation, .

Desc: Sex Story: How I was seduced by my wife's sister

Janis came to stay with us when she and her husband Richard were getting divorced. Richard had begun drinking soon after they married and had soon become more interested in his beer than his wife. Needless to say it was a bad time for her. My wife and I wanted to help her get back on her feet so we offered to let her stay as long as she liked.

Janis was my wife's younger sister, a petite blonde with smallish breasts but a tight little butt that filled out blue jeans deliciously. She was so different than Lynn, my wife of seven years, who had large beautiful breasts and perhaps a little too much ass. Janis also had far different sexual needs than my wife.

Lynn wanted sex three or four times a month which often left me in the bathroom with a magazine and a tired arm. Janis, so Lynn told me, wanted sex with Richard every night. Often while I was taking care of business in the bathroom I would fantasize about Janis and how good it would be to have a wife who wanted sex as often as I did. I never really thought it would happen though.

About two months after Janis moved in with us she started flirting with me. Teasing me about being almost as hard up as she was, and wearing tight jeans and wiggling a little extra when I was around. Lynn noticed it too and mentioned it to me a couple of times saying that Janis was a hot bitch and she thought Janis was after me. I usually just said I hadn't noticed.

One morning about a month later Lynn had to go to work early and I had the day off. I got up about nine thirty or so and stumbled into the bathroom to masturbate and then shower. I had just barely stepped into the shower when I heard the bathroom door open. I looked over the shower door and there was Janis in a bathrobe.

"Hi!" she grinned at me.

"Uh, Hi" I stammered back standing naked in the shower with the remains of a hard on left from jerking myself off.

Janis bent over letting her robe fall open enough to expose one small tit and picked up the 'Penthouse' magazine that was still lying on the floor. "You poor man!" she said rising back up. "Has my sister been neglecting you?"

"Uh..." was all I could say.

"Well maybe I can help you out." and with that she set the magazine down and then dropped her robe to the floor. "May I join you?"

"Uh..." again I was lost for words as I stared at Janis's perfect body.

She didn't wait for me to find words or to invite her in she just stepped up to the shower and opened the door. My cock had become fully erect again just looking at Janis and I was a little embarrassed standing there like a gawking teenager with my hard-on in my hand.

Janis didn't miss a beat. She stepped right into the shower with me and then quickly went to her knees. I watched as she took my cock from my hands and then extended her tongue to begin licking at the base. Her tongue traced it's way delicately all the way from my balls to the head of my cock. It swirled around the head a couple of times and then her lips sank down taking my cock between them until they were at the base of my shaft. My cock is not monster long, only about seven inches, but it is big around when erect. It filled Janis's mouth and throat but I could tell she was skilled at what she was doing.

The sensation was new to me. Lynn had never given me head in all the years we had been married. I looked down into Janis's eyes as she looked up at me and began slowly fucking my cock with her mouth. Her eyes showed lust, love, and just a hint of amusement. It was then I realized I had been standing there with my mouth agape since she had first walked in the bathroom. I closed my mouth and my eyes and just concentrated on the feeling of Janis's mouth fucking my cock.

She continued this as the hot water beat down on both of us for at least ten minutes until finally I lost control and exploded into her mouth. Janis swallowed every drop and then stood up smiling and kissed me with the taste of my cum still on her lips.

My cock never even began to deflate as I pulled her to me. She whispered, "Fuck me Bill. I need fucking so bad. Fuck me here and now. Put your cock in my pussy."

I turned her around and lifted her up and back against the wall of the shower. The water was splashing off her chest and running over her small thirty-two B tits. She spread her legs and wrapped them around my hips pulling me to her. I nearly passed out as my cock pressed against her wet pussy lips and then easily slid past and into her cunt. As my cock sank into her Janis gasped and scratched my back.

"Fuck me!" she cried. "Fuck me so good!"

I began pounding into her as her dirty language, so different from Lynn, raised my excitement to the next level. Her ass was pressed up against the shower wall and it made noisy slapping sounds as each thrust pressed her back against the wall. With a hand under each ass cheek I leaned my head down and began licking her left nipple as the warm water from the shower flowed past. Janis was moving in rhythm with each stroke of my hips and with one hand she grabbed my head and pressed it hard to her breast.

"Bite me!" she pleaded, "Bite my little titty!"

I sucked her erect nipple into my mouth and held it between my teeth, never missing a single stroke with my cock pumping her pussy. Keeping time with my fuck strokes I sucked and bit her nipple. With each stroke I could feel my balls swelling. Just when I knew I couldn't hold out any longer Janis arched her back and screamed.

"I'm cumming, Oh God Yes!" Janis was so loud I was afraid our neighbors would hear her. "Cum with me! Fill my cunt with your love!"

With that we came together, my cum flowing into her pussy and out and down her tight thighs. We stayed in the shower holding each other, relishing the feel of each other's nude body until the water grew cold. Shocked back to reality by the cold water I quickly twisted the knob and we both laughed as we jumped out of the shower. I grabbed a towel and began drying Janis's perfectly smooth skin. I tussled her hair with the towel and then moved lower, drying off her shoulders, arms, and then her chest. I remained longer drying her breasts than was really needed and this made Janis giggle and moan gently. I turned Janis around to dry her back and to admire her bare ass. It was as beautiful as I had imagined. Soft, round, and perfectly smooth, her ass was a masterpiece of art. I slowly lowered the towel and began gently buffing away the drops of water clinging to her skin. She reached over to the counter and handed me a bottle of skin moisturizer.

"Would you mind putting this on my back?" Her voice was soft and gentle like falling rain.

"Not at all!" I was startled by the rough sound of my own voice but I took the bottle and poured a copious amount into my hands. I started rubbing on her shoulders and as I moved down she raised her arms above her head to give me more room to work. With her arms raised she was a picture of beauty! Her bodylines flowed gracefully like the lines of a purebred racehorse, smooth and graceful.

Just rubbing the moisturizer on her back had renewed my erection and as my hands moved over her ass my cock began dancing up and down like an excited schoolboy. Janis reached behind her took my cock into her hand.

"Put some on this too." she smiled back to me over her shoulder.

Without a word I poured a good amount of the moisturizer onto my cock.

"Now fuck me again!" Janis's words were all I needed. She bent over and put her hands on the sink counter and then spread her legs. I took my cock and rubbed her now exposed pussy lips with it. Up and down over those swollen soft folds I ran my cock. Janis began moaning softly and then louder. I gripped her hips with both hands and pushed my cock into her pussy, easily sliding all the way in until my hips pressed against her beautiful ass.

I held my cock perfectly still for at least thirty seconds, letting the tension build. Janis began moving her hips forward and then back. Taking my cock almost out of her cunt and then thrusting back to force it deep into her again. My left hand slid up and around her torso finally resting on her right breast gently pinching her nipple between my finger and thumb.

Janis's moaning rose in tempo and volume as we watched each other in the bathroom mirror. I savored the image of erotic pleasure as I leaned forward and began kissing her neck around to her earlobe. She responded by thrusting faster and faster. I moved my right hand from her hip around and down to begin rubbing her clit as my cock slid in and out of her dripping pussy. I could feel her short pubic hair against the palm of my hand as my finger rubbed and flicked her erect clit.

Janis's moaning became loud grunts as we both lost control again and I filled my wife's sister's pussy with my cum. As we calmed down Janis turned in my arms and kissed me.

"Thanks!" she said picking up her robe and sliding it over her back. She let it hang open loosely and winked at me as she left.

I stood naked with my limp cock dripping it's last cum drops onto the floor thinking about what had just happened. I had never been unfaithful to Lynn before and I didn't want to lose her but I desperately needed to have Janis also. As I thought about how I was going to keep both I dried myself off and got dressed.

I was standing in the bathroom. Stunned that Janis, my wife's sexy sister, had just seduced and fucked me in my own shower. I finished dressing and combed my hair and then went into the living room. Janis was there, lying on the couch with a tight pair of jeans and a white t-shirt on.

"Hi lover!" Janis smiled at me as I entered.

"I guess I wasn't dreaming then." I smiled back

"No..." Janis said. "I've wanted to fuck your brains out ever since I moved in."

"So now what?" I asked still pondering what this was going to mean to my seven year marriage to Janis's sister Lynn. "Do we tell Lynn or do we just leave it at a one time affair or what?"

Janis frowned at me. "Lynn would go ballistic and leave your cute little ass out in the cold and then she would skin me alive! We don't want that do we?"

"No. We don't" I replied.

"And I don't want to ruin your marriage either! But what she don't know won't hurt us!"

I walked over to the couch and sat down on the edge with Janis's legs behind my back. Absently I reached out and began caressing her thigh. "I love Lynn, Janis. But I need more sex than she can handle. You are gorgeous and I loved making love to you. I needed to make love to you. Oh shit! I don't know what is going on or what I should do."

"Look I'm not asking you to leave Lynn! Hell, I don't want you to leave her. She's my sister and I love her too. You need more sex than Lynn gives. I need sex, period. We can fuck each other with no strings attached and as long as Lynn never knows nothing bad will happen!" Janis turned and sat up as she spoke, causing my hand to slide from her thigh into her lap. Janis looked down at my hand resting in her lap and spread her legs slightly to allow it to sink between her legs. "See, your hand knows what to do!" She laughed.

I couldn't help but laugh with her, and as we sat there smiling and laughing at each other it seemed that maybe everything would be okay. Lynn wouldn't have to know I was fucking her sister and my sexual needs would be met for the first time in many years. I leaned forward and kissed Janis on the lips, my tongue sliding easily into her mouth. She responded eagerly to my kiss and reached up and pulled me toward her.

We both fell backward to a reclining position on the couch with me on top of Janis. I moved my arms to embrace her as our kiss continued, still building in passion. We stayed in that position, kissing and holding each other for many long minutes. Janis's tongue pressed past my lips, forcing it's way into my mouth to writhe and circle mine. Eventually we both had to breathe and so we broke our kiss.

I rolled off Janis and onto the floor in front of the couch. Sitting there I looked into Janis's eyes. Her eyes were a soft brown color and reminded me of two deep pools. They were beautiful and full of laughter and life. It had been so long since Lynn and I had laughed together. So long since I had really looked into Lynn's eyes. So long since either Lynn or I had been enthusiastic about making love to each other. So long since...

Janis saw the look in my face change as I slipped into solemn reverie. "You're thinking about Lynn, aren't you?"

"Yeah, I was just wishing it could have stayed the way it was when we first got married. You know before we became used to one another. Before we took each other for granted." I looked down, slightly embarrassed to be telling Janis this just after we had made love.

"Good God!" Janis laughed out loud. "Listen to you. Why don't you just shut up and ravish me? I am here for the fucking, so get to it mister!"

That brought me out of my funk and I climbed to my feet. "I haven't had a better offer in years!" I exclaimed and then reached down and picked her light body up off of the couch. In mock caveman style

I gently threw her over my shoulder and carried her toward the bedroom.

"Oh no!" Janis said in exaggerated fear. "What ever should I do?"

I threw Janis down across the bed in our bedroom and then quickly straddled her, pinning her arms down with my hands. I leaned down and kissed her passionately. As I held Janis down she struggled just enough for show but not enough to risk actually getting away. I kissed down her neck and then even lower across her t-shirt to gently bite one nipple through the thin fabric.

"Mmm" Janis moaned lightly and quit struggling completely as my teeth pulled her nipple. "Mmm, yes bite me."

I released her hands and pulled her t-shirt over her head exposing her tiny breasts. Just the sight of Janis's firm tits caused me to begin getting hard, and as I sucked each hard nipple in turn I quickly became uncomfortable. Janis noticed the problem and rolled me over on my back. She slid off the bed to kneel in front of me and began unfastening my jeans. As she loosened my pants I raised my hips up and allowed her to pull them and my underwear off, leaving my cock free.

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Story tagged with:
Ma/Fa / Consensual / Cheating / InLaws / Oral Sex / Masturbation /