I fucked my sister in law, before she was my SIL 39M [MF] at the time I was 29.

Before my wife and I were married, we took a break for 3 months. During that 3 month span, she admitted to being with 2 guys. I was also with 1 girl and I’ve never shared this story with anyone. It was a one night stand….and it was with her sister, my now sister in law. I’ll call her M, my wife A. M is very attractive, blonde hair, blue eyes, white pale skin, she’s roughly 170 cm tall and 65kg, my guess anyways. A and M look quite different and both are good looking women.

So as mentioned A and I were on a break for roughly 4-6 weeks at this point. 2 friends and I had some drinks and went to the bar, it was at the bar we would run into M and some of her friends who were friends of ours as well. M was in a serious relationship with another guy at this time but the relationship was at a rough patch and months later would end but at this point they lived together about 3 blocks from my place. We all chatted and hangout, it was closing time and myself, 1 of my guy friends as well as M and 1 of her(pretty intoxicated friend) decided to keep the party going as I invited them to my place. M and I were casually flirty and the chemistry was there. Her drunk friend was playing the role of mother hen/cockblock. We had a couple of more drinks and my guy friend, who was a roommate, went to bed. I asked the 2 girls if they would like to stay, M said she should be getting home and her friend would go with her. Her friend was nodding off tho, so I invited M to stay and having a king sized bed, asked if she’d like to join me and give her friend the full couch. She was unsure, and figured maybe would stay and would stay on the couch with her friend. I told her my door is opened if she should change her mind once her friend passed out.

I should note, I know about M sexual history and some of her likes and dislikes thru conversation with my wife and with M. I also knew M found me attractive as my wife admitted M said she thinks I am hotter then her current bf. Knowing this gave me the added confidence to get her to my place and to flirt all night and heighten the sexual tension.

As I lay in bed, kind of disappointed at the thoughts of what could have been. I hear a little knock at my bedroom door. “Come in?” I say kind of nervously. The door opened to a very nervously looking M….

“Hey….I think I’m gonna head home.” She said as she played with the button on her jacket.

“Oh….ok….whatever you think is best….you’re more then welcome to stay….lots of room here…” I glanced to the open side of the bed.

You could see she was really torn between given in to my advances and making the righteous choice. “I know….and I really want too….but Matt is at home…and A…I just don’t think it would be right, ya know?”

“Yes…I completely understand….it would be fun as fuck tho. Matt would never know, he thinks you are at Saras….and A was the one who wanted the break. She was the one who pushed for it, so that shouldn’t matter.”

She bite her lip, she looked so tempting at this point, but if she turned and left i would have understood….”I know….and…I want to…oh I want to” she said with a nervous laugh.

“Then give in to your temptation….nobody has to know….our secret one night affair” I said with reassurance and confidence…..the butterflies danced in my stomach at this once in a lifetime opportunity.

“I have no Pj’s…or toothbrush”

“I have brand new ones” I got up and went to the ensuite and tossed it on the foot of the bed. At this time she stepped in and slowly closed the door behind her. “And I have this” returning with a tee shirt that was way too big for either of us.

“Are you sue about this?” She asked for the last time….

“Yes….100%” I looked her up and down, the jean jacket, burgundy button up blouse visible underneath. Those tight fitting light colored jeans hugging her thick thighs and curvy ass. She watched me eyeing her, as i kicked my lips in anticipation. She smiled, grabbing the shirt and tooth brush and headed to the ensuite.

I was only wearing boxers. I got back in bed, my cock twitched with excitement. The thought of having the other sister to a girl I fucked was thrilling. My heart pounded and mind was a circus. I couldn’t wait to finally get my hands on her after fantasizing about this moment since I had first met her.

As she returned to the bedroom, I couldn’t take my eyes off her. Her perky nipples poking thru the fabric of my shirt. She smiled nervously, “is this alright?” She asked half heartedly.

“Yes…..its perfect” I assured her.

Watching her juicy thighs as she skipped across my bedroom floor. Placing her bar clothes folded on my dresser, her sweet ass cheeks teasing me, poking out from under the shirt, part of a thong visible between her cheeks. She has such a juicy ass. Much more curvy the her petite sister A. She turned and leaned against the dresser…the pink of her panties showing as she gave me a seductive look, not one to miss an invitation, I stood up and walked to her. Standing in front of her, she pops up onto the dresser, I stand between her thighs. Place my right hand on her thigh where it meets her torso, my left pulls her hair back behind her ear. I tilt her head towards me, the lust in her eyes was intoxicating. The tension was incredible. The smell of breathing drove me wild, the aroma of her body, her fragrance was enchanting. Igniting a desire inside me as our lips meet, soft, smooth long kisses to start, acquiring a taste for one another. It didn’t take long for those kisses to be filled with passion, slightly sloppy as our saliva mixed with one another. The fire and passion for each other was evident. She wrapped her legs around me, pulling me closer. My arms around her as I lifted her off the dresser, turning with her and making our way to the bed, kissing feverishly as we did. It was so passionate.

Sitting her on the bed, pulling the shirt over her head, admiring every curve as she laid back. Her breasts, about a 34c, not huge but not small….falling slightly to the sides. Her areolas a soft pink, almost a tanned pink. Smaller, in proportion with her breasts. Her nipples, like her sister’s were perky, erect and very noticeable. Gum drops, pencil eraser nipples, big suckabke nipples. Her stomach was soft, not chubby or fat as there was no rolls, it just wasn’t toned or hard, just soft. I loved it. She bite her lip as she watched my face intensely. I made sure to give her that look of approval, I liked what I seen, it was better then I’d even imagined. I wasted little time, curling my fingers around the waistband of her underwear and slowly pulling them down, over her thighs and unto the floor. Her sister A was bare, always waxed. M had a soft little bush, a trimmed triangle at the edges but a natural bush on her public mound. It was a sandy blond, slightly darker than her hair. The lips were perfectly hairless. She had such lovely folds and contours, the petals of her flower were delightful. She was clearly aroused and ready for attention. Her clit wasn’t exposed but the hood was small and easy to push up with an upper lip to make way for an assaulting tongue. I dropped to my knees and kissed her inner thighs. The musky aroma of her sex, I’ll never forget her scent as it consumed me and unleashed my animal instinct. I kissed her inner thighs, taking my time and care not to make contact with her sex as I inhaled her sweetness. I made my way closer to her awaiting vulva, kissing each side and avoiding contact with her labia and clit, she moaned softly as she craved that touch. She so desperately wanted that contact, slowly lifting her hips and pressing her pussy towards my face, hoping for that contact. I wouldnt give it to her, not yet, id playfully pull back as her sexual frustration built. Teasing both of us as I made myself wait, before finally kissing her awaiting labia. The soft sexy lips against my mouth instantly made my cock stand as hard as its ever been. My tongue slowly poked thru my lips and parted hers, the taste of her wetness on my tongue sent electricy thru my body. I started at her opening and scooped my tongue upwards, a shovel collecting every drop of her glorious juice. She tasted so good…my chin glistened with her wetness. I dug my tongue deeper and deeper, grunting with delight. My groans were met with her sounds of pleasure, moaning approvals as she whispered my name. My tongue would occasional go lower, circling her tight little asshole. I’d suck her luscious labia, sucking her delicate juices off her lips. It was so fucking good. Her cunt tasted amazing.

I could feel her pleasure building as my tongue found her clit, my upper lip lifting her hood and exposing her little ball of joy. My tongue danced and darted all over it, licking and flicking feverishly. Pressing hard against it as it attacked with a pleasurable purpose. My right hand wandered upwards, the smooth skin of her stomach was thrilling but her tit was even better. Cupping her breast in my hand, squeezing playfully as I never took my mouth off her sex. My finger pinching and playing with her welcoming nipple, gently circling her areola and flicking about. It wasn’t long before I got my left hand in on the action. Two fingers finding her wet, inviting opening of her pussy. Sliding in with ease, before adding a third finger and then a fourth. Sliding innand out of her opening, eventually settling on 3 fingers as I began to quicken my pace. My mouth never leaving her sex, tongue concentrated on her clit, right hand playing with her nipple and left finger fucking her pussy, thrusting in and out with a purpose, fucking and pentrating my future sister in-law. It wasn’t long until her pleasure began to consume her, vocally approving of my oral and physical skill. It was such a thrill feeling her pussy clamp tightly around my hand, her hands in my hair and pressing my face into her pussy as her climax escalated and her body began to tremble and shake, she convulsed uncontrollably as she gasped and moaned, her thighs squeezing tightly against my face. It was amazing. Such a powerful feeling to make a woman cum that way.

My cock was so hard at this point. I lay next to her, allowing her a few moments to gather her composer. I knew she’d want to return the favor, and she did. Sucking my cock, watching her look up at me…its permanently etched in my brain and whenever I look at her know I can see my cock in her mouth. The sounds of her sucking and gagging, she was a good cock sucker. My wife, her sister is better tho. It wasn’t long before we were fucking and I had to have her from behind, her ass is fanatic. I had her stand and bend over the bed and I took her this way. My cock slide in with ease, she was so wet from the foreplay. I loved penetrating her, just the thought of knowing I claimed her so to speak, I used her pussy and enjoyed her. It fills my mind at every family gathering. Even tho we have never spoke of it. Ever. When she left that morning it was never mentioned again. I tried to bring it up once afterward in secret and she wouldn’t engage. Just flat out ignored me. And I’ve never pursued it, would I again? I don’t know if I could now tbh. We are both married and I’m married to her sister. Lastly to finish tho, I knew she was an anal queen and I had to have her ass. I never wore a condom and after fucking her pussy and having my cock glisten in her wetness, I watched and admired her tight little ass. My finger rubbing it as I fucked her pussy. I placed a finger inside to see if she was ok with it and there was no resistance from her. I then removed the finger and stuff my thumb in her ass, again she wasn’t stopping me….I told her I wanted her ass….take it.

I removed my cock from her pussy, pressed the head against her tight sphincter and increasing the pressure until the head popped thru, the way her hand clinched the blankets of my bed as she gasped. I waited a moment for her to regain herself and slowly pushed forward until my entire cock was buried inside her ass. I started slowly, long full strokes as I felt the tightness around me. Before long I was thrusting harder, grabbing her waist and pulling her into me with each stroke. The ripple effects sending a wave thru her ass cheeks each time our bodies collide. I cant control myself, I become an animal. Just pounding her ass, harder and harder, faster and more vigorsly. It dont take long before my cock beings to sprutter and shoot deep inside her. I filled her ass with cum, she told me she felt her insides get warm as shot after shot went deep inside her rectum. It was amazing. I remember staying there inside her, getting half soft before pulling out. One of the fondest memories was the gush of cum that came with my cock.

Thats my story. It felt good to write it but I’m uneasy sharing this. I know I’m anonymous but there is always the chance she sees it, or my wife.

Source: reddit.com/r/gonewildstories/comments/k7fxh1/i_fucked_my_sister_in_law_before_she_was_my_sil