My Step Sister Came to Stay
Copyright© 2026 by Highlander90
Chapter 4
Incest Sex Story: Chapter 4 - A brother's step sister surprises him and moves in with him. The two of them under the same roof creates sexual tension that eventually bursts.
Caution: This Incest Sex Story contains strong sexual content, including Ma/Fa Consensual Heterosexual Fiction Incest Brother Sister Spanking Cream Pie Masturbation Oral Sex Public Sex
The flush of a toilet wakes me. The wave of pain then bursts into my head.
“Fuuckkkk” I groan and I cup my hands over my eyes. The wave of realisation then comes crashing down on me. The realisation of who is in that toilet. The clues of clothes spread out across the floor. The obvious signs that someone slept next to me. The fact I’m in bed naked and that only happens after sex. I remember we had sex on the couch and then, then we, did we have sex in bed? I can’t remember.
“Um hi” Bridget greets me as she comes out of my en suite.
“Hi” I say back to her. Her hair is all disheveled and she is wearing one of my t shirts. She looks very sheepish.
“How are you feeling?” She asks.
“My head feels like someone has been using it as a drum all night.” I say as I rub my temples.
“Same as me then” she chuckles lightly. “Want me to make you some coffee?”
“I’m ok, think there’s a bottle of water in the refrigerator?” I hope there is.
“I’ll go grab it for you.” She offers.
“Painkillers too please!” I call out.
Bridget returns back with a pack of drugs and a large bottle of water. “Thank god.” I whisper. She comes around to my side of the bed and hands me the pack of drugs and places the water on my bedside table. She remains there as I pop two little pills, fuck it three. I take a big swig of water and wash it down.
“Want some?” I offer her. She simply stands there with her arms crossed under her chest and shakes her head.
“You can get back into bed!” I tell her.
“Are you sure?” Her voice doesn’t have that usual confidence, it almost feels like she thinks she’s in trouble.
“Just get in” I say to her as she quickly moves around the bed and gets back in next to me, pulling the covers over her.
I lay with my head on the pillow staring up at the ceiling. The events of last night going over in my mind. I remember dinner and then heading too ‘The Dragonfly’ but after that it’s pretty hazzy.
“Do you regret last night?” She asks just higher than a whisper. Like she was scared to ask aloud.
“God my head is hating me this morning, we drank a lot of booze!”
“That’s not what I meant ... I don’t mean the drinking...” She bites her lip in a nervous manner.
“No I know you didn’t...” The thought runs through my head. I feel I wasn’t compelty out of it that I could have stopped it if I wanted. If I didn’t have anything to drink would have I resisted or said something. Did it happen cause we were drunk yes. Did we both want it, yes. If I was to relive last night would I change anything, no. So do I regret having sex with my sister? I knew deep down what the answer was. Purely because that paining feeling of guilt wasn’t there.
“No I don’t regret it!” I say to her as I turn my head to look at her.
“You don’t? Or are you just saying that to not hurt my feelings.” I could see the fear in her eyes.
“Bridget I’m pretty sure, I know that if I did regret it. I would be freaking out right now.”
“But how do I know you’re not in your head and just putting on an act.” A tear rolls down her cheek. Wow this is really effecting her.
“Bridget. I love you and I don’t regret what we did, honest!” Truth was I wish my memory wasnt so fucked because I have this inner feeling that it was amazing and more happened than I can remember.
“I love you too!” She smiles as a few more tears fall. It’s a very emotional morning in our current states.
“Come here” I offer my arms and she gladly accepts my hug. I give her a quick kiss on the side of the head.
“Can I have some water?” She asks as she pulls away from the hug.
“Of course.” I reach over and grab the bottle and pass it to her. “Just keep it on your side. I need to pee.”
Once I’ve relieved myself I check my phone before getting back into bed. “God is that only the time. I’m going back to sleep.” I chuckle.
“Want me to leave?” She asks.
“Where did the confident, flirty, vulgar Bridget go?” I tease her.
“I’m still her” she smiles. “I just...”
“Bridget it’s fine. Just lay down and get some sleep!” I tell her and she simply nods.
I’m glad to say I manage to drift back to sleep. I’m stirred as Bridget edges her body closer to mine. I automatically pull her in to me as we cuddle in the spoon position. Yes I am spooning my step sister right now and yes I am naked. I’m pretty sure she is naked under the t shirt to. Does it feel wrong, in my heart no. My head is telling me it is but even that itself isn’t convinced.
We drift back off to sleep for I’m not sure how long until something else wakes me. It’s Bridget’s voice, well Bridget’s moans.
I gather my surroundings and realise that I have a hard on and Bridget is rubbing her body, more specifically her ass against it. I can’t deny that it feels good.
My hand that was resting on her thigh, slowly slides up her body. Slipping under her, well my t shirt, until I find her chest. I take her soft tit into my hands, I gently squeeze it and massage it. Gaining louder groans from Bridget. Her hand finds mine on the other side of the t shirt and helps squeeze her.
“Mmmm yes” she groans as her hips move a little faster and I begin to grind my cock against her.
I can’t help but let out a moan of my own as I breath her in. I can feel her hard nipple under my hand and I pay it some attention. Gently tugging on it and rubbing it with the rest of her soft mound.
“That feels good Jason” she whispers.
I continue to play with her tits and grind against her in a slow motion. My cock is throbbing hard and feels amazing sliding up and down the crack of her firm round ass. That wanting feeling is there though. Wanting, no needing more.
I remove my hand from her tit which she groans in sadness. I edge back slightly and use my hand to now guide my cock between her legs. I don’t find the entrance to her pussy but I wasn’t particularly looking for it. I simply slide my cock between her crotch and can instantly feel how wet she is.
“Oh fuck” she moans as my cock slides against her pussy.
She begins to tilt her hips back and forward to help with the Friction. It feels great there’s something so erotic about it. Not the position but the person. Last night alcohol played a big part but this morning. I know inside I want this. It wasn’t a one time thing. Maybe a part of me wants to find out what it’s like to have sex with Bridget when I am more lucid.
“I want to fuck you” I whisper to her.
“Fuckkk” she groans loudly as her fingers instantly find my cock and guide me home. I push forward and moan deeply as I slid into my sister’s pussy.
“Oh my god Jason...” Bridget moans as I push my cock in as deep as I can go. My hips resting against her plump ass. I just want to savour the feeling of her pussy wrapped around my cock. The need to fuck her quickly takes over and I start to pump my hips.
“Yes ... yes fuck me” she moans as I hold onto her and fuck her as hard as I can. It’s hard to have the same speed and pace in this position but I do my best. In truth I don’t want to go too fast because my head is killing me and too much I’m pretty sure it will explode.
I’m happy with the rhythm I have and going by the moans and groans of Bridget she is loving them too.
Her pussy feels magical around my cock. I’d happily lay here all day with my cock deep inside her. Less than twelve hours ago I didn’t want to be near her. Now I’m in her and don’t want to leave.
I keep fucking my sister hard and I can feel the end growing. I have no idea where I came last night so best to warn her.
“Bridget, I’m gonna cum!” I grunt.
“Fuck, me too, just keep going, don’t stop, don’t stop.”
I up my efforts that little bit for the last stride and slam into her hard as I cum. She screams out with pleasure as we both climax at the same time. My cock pumping cum into her exploding vagina.
“Oh Jason, fuckkk” she moans as I pump a few last times into her.
“Shit” I gasp, my head spinning a bit.
“Don’t take your cock out, just leave it there.” She requests and I’m more than happy to oblige.
We lay there for a while, the highs of our orgasms fade away being replaced by the alcoholic hangover.
“I’m going to shower.” I say to her as I climb out of bed.
“Ok” she nods as she lays there, a glow about her face of a freshly satisfied woman. I’m not being big headed but I have seen the look before and it’s a proud moment for a man. However seeing it on my sister, it wasn’t guilt or regret, it was much more than pride.
“Aren’t you coming?” I say as I walk into the en-suite.
“Thought you’d never ask!” She climbs out and follows me to the bathroom.
I get the shower nice and hot before Bridget joins me. I look at her naked form properly for the first time. She’s in great shape. She has slim flat torso, nice hips on top of her slender legs. Her breasts truely are incredible and just sit there nice perky and high. Her nipples hard already.
I offer her my hand and she takes it, as I guide her into my decent sized walk in shower.
She slips her arms around me and pulls me into a kiss. Theres no rush or urgency, just a tenderness. We kiss as the water cascades down us. It’s not long before our hands begin to roam each other.
I grab some soap and with hot water start to lather us up. The bubbles and water dripping all around us. I pay special attention to her big soapy tits as I caress them. Bridget’s head tilts back as she moans in pleasure. I lean forward and latch onto her neck. Kissing and gently nibbling. Her hand finds the back of my head and pulls me into her.
My cock is reawakening a little and is helped on as Bridget takes it in her hand and slowly strokes it. I guide her backwards so she’s against the shower wall and use the soapy sponge to clean down between her legs before I drop the sponge and use my hand. Even with the wetness of the shower I can still feel her womanly juices that are dripping out. I cup my hand on her pussy and begin to rub.
Her eyes close and her mouth is open, audible moans emitting as I start to rub her pussy faster. It’s not long before I stick two fingers inside her. She gasps at the intrusion but digs her nails into my back, wanting and needing more.
I pump my hand back and fourth as I finger fuck my sister in the shower. The sound of her wet pussy echoing over the noise of the shower.
“Oh my god Jason yes, yes. You are going to make me cum again!” Bridget whines out as her knees become a little weaker. I do my best to support her with my other hand as my fingers penetrate her pussy at a faster pace now.
“Fuck fuck fuck” she pants as her body starts to stiffen. I lean down and suck one of her nipples into my mouth.
“OH FUCK YES!!” The extra little stimulation of sucking her nipple sends my sister over the edge. Her nails clamp down into my back as she cums on my fingers. I keep fingering her until she rides it out and then grabs my arm. Sucking my fingers into her mouth.
Once she releases me she wordlessly turns away from me and places her hands on the shower wall as she arches her back and pushes her ass out towards me. She gives me a grin over my shoulder and I happily step forward.
I dip down slightly and line my cock up with her pussy and then slide it. Bridget moans out loud in pleasure at the bigger, thicker invasion of her pussy.
We both quickly take up a hard fast rythem as we fuck in tandom. My hips slamming against her wet ass. The sounds of moaning and bodies colliding well out play the noise of the shower.
I grab my sisters hips tightly as I fuck her. She moans and encourages me to fuck her. I love dirty talk during sex, it really adds to the pleasure.
“Cum inside me again brother, fill your sisters pussy!” She demands as we fuck hard.
“Ooohh fuck” I groan as my pace slows by my force ups. I pump deep into her as my cock fills her pussy with my cum. I feel it fire deep inside her.
“Oh my god” she moans.
I do pull out and we do actually shower but with some more touching and kissing. We do eventually get out of the shower.
As we both stand in my room, drying ourselves. Bridget suggest we go out and get breakfast. I couldn’t agree more. I need carbs and grease. There’s a good breakfast joint not far from my apartment that I have frequented with a hangover. The bonus of living in the city is everything is very close by.
We get dressed and head out. Both dressed very casually. Bridget is wearing leggings and has borrowed one of my hoodies. We decide to order in rather than get a takeaway. I order a large plate of pancakes with extra bacon, Bridget orders a plate of breakfast waffles.
We’ve just finished up and I was about to pay but Bridget insisted so I let her pay. I head outside too wait for her and just as I step outside I almost walk into someone.
“Oh my god I’m sorry” I say, as I extend my arms to ensure I didn’t knock them over.
“No no, I’m sorry I wasn’t looking ... Jason??” The familiar female asks.
“Natalie hi” I frown. Nataile was a girl I used to sleep with a few years back. She still looks great. She was a bit of a freak in the bed, we had some wild sex.
“How have you been?” She asks.
“Yeah I’m doing great actually, just working a lot to be honest.”
“Still working at Bowman’s?”
“Yeah, you still with National Enterpise?” I ask her.
“No I left there a couple of years ago, I’m now actually an air hostess with United Airways It’s long hours but you do occasionally get to see lots of parts of the world.” She does seem happy about the career change.
“That’s good, how does that work with Mark?” I ask about her boyfriend whom she called this off with me for. Can’t keep them all.
“We split up a few months ago. He wanted to surprise me when I had a stop over and got surprise of his own. Found me in bed with two other guys...”
“Ah I see.”
“So yeah called things off, not that I blame him. It wasn’t the first time...” When I say she is wild, I mean wild. Couldn’t keep her panties on.
“You off the singles market yet...” As she asks the question my sister comes out behind me.
“Jason?” She asks.
“Bridget this is Natalie” I introduce them.
“Natalie this is my...”
“I’m his sister, well stepsister to be accurate.” Bridget says as she steps forward and extends a hand towards Natalie. “It’s nice to meet you!”
“Yes like wise, didn’t know you had a sister?” Natalie questions looking at me.
“Yeah he likes to keep quiet about me, I can be a bit of a handful!” Bridget says.
“Ah I see, well I need to run. Was nice seeing you Jason, nice to meet you Bridget. Jason you should give me a call sometime?” Natalie says as she ever so slightly bites her lip before walking away.
“She’s hot!” Bridget comments.
“Yeah but she’s wild.” I add as we begin walking back to my apartment.
“You’ve slept with her? What am I saying, of course you have. In what way wild?” Bridget’s interest peeks.
“She wouldn’t look out of place on a BDSM website that’s for sure!”
“Oh kinky is she? Did you have any fun like that?”
Normally I would have told Bridget off for that kind of thing but considering the recent development in our relationship, I didn’t.
“Not to the extremes that she really likes but she did make me tie her up and have my way with her. It was quite erotic being in total control.” Basically Natalie had her ankles and wrists bound, and I could fuck her anywhere I wanted. It was quite tame compared to how some BDSM sessions can go but it’s not really my thing.
“That does actually sound quite hot! Like did you fuck her really hard?” I could sense Bridget was getting turned on by this.
“Yeah I actually went a little bit primal on her. She didn’t really set any rules so had my way with her hard and finished in her ass.” It was my first time doing anal. I had slept with many girls before but it I never had the chance to do it. Natalie didn’t exactly agree to it but I can assure you she did not object. She came even harder when I fucked her in the ass.
“Oh wow Jason, I’m getting a little hot over here!” Bridget fans herself. It’s my turn to act like her and go all out.
“After I came in her ass I got her to clean my cock with her mouth. I somehow stayed hard so I fucked her mouth.” Not entirely true. I did get her to suck me off but I didn’t stay as hard as I wanted too.
“Fuck Jason, you’ve never been so open with me before!”
“I’ll stop” I smirk. I had no intention of stopping. I’ve reached a new level with Bridget. The flood gates have opened.
“God please don’t stop...” god, sounds like she’s almost cumming here in the street.
“Nah I’ll think I’ll stop. Wouldn’t want anyone to hear how I fucked a girl to my pleasure and came deep in her ass then got her to clean my cock.”
Bridget doesn’t reply but I notice her pace quicken up. We aren’t far from my apartment but as we pass an alley a few blocks away, Bridget grabs me by my top and drags me into this alley.
“Wow what are you doing?” I don’t resist, I could easily pull back but I go with it. She pulls me until she throws me against a wall behind a dumpster.
“Bridget...” she cuts me off as she locks lips with mine. She’s passionate and lustful. Her mouth is open wide and her tongue is demanding attention. I give in and pull her into me. I match her passion and hunger. Her hand finds my crotch and strokes at my cock. It doesn’t take long for it to get to her desired state.
Without a word she squats down in front of me and pulls the edge of my pants down. She frees my cock to the exposure of the alley. There’s a hunger within her as she just as quickly inhales my cock into her mouth.
Her head bobs quickly as she sucks and slurps on my cock. She was good, I’ve had some bad and average blowjobs in my life but Bridget knows what she is doing.
She occasionally looks up at me, god isn’t that a fucking hot sight. When a girl looks at you with her mouth full of your cock.
I moved some strands of hair away from her face and admire the view.
Bridget’s ups her efforts, moaning and slurping my cock. So much so that I don’t even hear the voice shout from the top of the alley.
“Excuse me!!” A deep voice calls out. Fuck it’s a cop, what are the fucking chances.
“Bridget!!” I say with panic in my voice.
She doesn’t respond as she continues sucking my cock deeper.
“Bridget” I say with more panic as the cop begins to walk down the alley.
“Bridget, for fuck sake! RUN!” I force myself away and pull my cock back into my pants and begin running.
“Oh shit!” Bridget says as she finally realises the situation we are in. Thankfully she’s quick on her feet and not far behind me. The best fortune we have is that this cops fitness levels aren’t great and we quickly loose him and give him the slip. That or he couldn’t be bothered chasing us, either way, panting we arrive back at my apartment.
We just look at each other and laugh.
“That was a thrill!” She says to me.
“Oh no, don’t you be getting any ideas now!” I playfully warn her.
“Whatever could you mean brother?” She says coyly.
“You know exactly what I mean my naughty wicked sister!”
We both plonk down on the sofa and Bridget toses off my hoody then turns to me. “Would you like me to finish what I started?” She gives me a grin as her hand wanders towards me.
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