a year ago innonfiction

At 18, I (M21) lost my virginity to my SIL in a MFM threesome

Author:

Top-Cash9351

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This is 100% true, and a long story. It’s also my first ever post, with even more stories if you guys are interested. Names withheld to protect myself and those involved

For some backstory, I live in a VERY small town. Everybody knows everybody’s business, so being sexually adventurous can be a daunting task, because everybody talks, and everybody knows everybody. You have to really play it safe to avoid rumors being spread. This heavily influences how this played out.

This was back in 2019. I was 18, and I had recently moved in with my brother M35 and his wife F29.

As my brother was almost 18 years older than me, he had started his life by the time I was born. I essentially had no relationship whatsoever with him, as we lived in completely different states. Due to financial reasons and family struggles in my home state, I left home to move in with my brother, who welcomed me with open arms and wanted to build a relationship with the brother that he never really knew. His wife is like a mother figure to me and took care of me, putting me through school, helping me through many of my firsts in early adult life, and essentially taking me in as one of her own children.

I’ve always found her so fucking hot, especially because of the aura of authority that surrounded her. She has pale skin, short curly hair, hazel eyes, and the cutest fuckin lil piglet nose ever. She has juicy tits, and I could hardly keep my eyes off of them. I loved to watch her walk around the house, staring at her thick ass thighs and nicely shaped ass and I always wondered what it was like between her legs. Of course I never said anything, that’s my brothers wife and I’m respectful.

But that didn’t stop me from having secret fantasies about her sitting on my cock, or letting me taste her pussy. Our home has thin walls and I could often hear her getting absolutely fucked, and the way she screamed and moaned made me so hard.

I used to sneak in the bathroom and steal her dirty underwear and put them over my face, jerking off to the scent and taste of her used underwear, sometimes leaving my load in them. This was something I could never tell anybody.

Well one day, out of the blue, my brother and I, along with family friends were hanging out at home on a lazy weekend. We were watching movies while my brothers wife was at work for the day.

I got a text and when I checked my phone, it was from my brother. I thought it was strange, seeing as how he was right there in the same room as me.

When I opened the text, he was wanting to know if he could ask me a personal question, if I promised not to judge him. Whatever I thought, It can’t be that big of a deal, so I said sure.

When he replied, the text said

“Would you wanna watch me and my wife fuck, or maybe even join?”

I couldn’t believe it. It was a secret fantasy I had for quite a few months at this point, and it was actually presented to me as an opportunity, and for my first ever sexual interaction, it was on the wild side.

At first I was hesitant, because that’s my brother and his wife. I wondered if it was wrong. I didn’t respond for a while because I was honestly scared. But he explained to me that sharing her was a fantasy of theirs, and they didn’t trust anybody in our small town to keep their mouths shut. Me and him would solely focus on her and have a good time, and it would be our little secret.

He told me he knew I had been stealing her panties because they’d be in a different location from where they were left. He let me know he told his wife, who thought it was hot.

I couldn’t pass up the chance for this, so I said okay.

Over the next few days, I was given a couple pairs of her dirty underwear as a gift. It was so fucking hot I came so many times.

Fast forward a few days, and it’s late at night after everyone’s already gone in their rooms for the night. My brother called me from his bedroom, thin walls like I said. When I walked in the room, there his wife was, sucking my brothers dick, with her legs spread for me to get a good look at her pussy, completely shaven and bald. He told me she did it just for this night to happen.

I was so turned on but so nervous so I watched for a few minutes, until my brother grabbed my hand and slid my two fingers into her pink little pussy. It was so wet and I could feel how horny she was. Her heavy breathing was killing me as my brother explained how to finger her pussy. I had my fingers inside of her, and he rubbed her clit at the same time. After a few minutes, she squirted all over my hand, leaving the bed soaked. I licked all her juices off my fingers, and I was hooked.

She sat up and told us how intense it was for her. She motioned for me to lay down on the bed and she got between my legs, asking if it was okay to touch me. She didn’t have to ask. I told her yes and she spit in her hand and started running her hand up and down my cock. I was so nervous I could barely focus on the pleasure but I kept going along with it. I couldn’t believe this was happening. Soon she spit on my dick and then wrapped her lips around my head and started bobbing up and down, swirling her tongue in circles around my head and shaft while my brother watched and jerked off. The feeling of her mouth on my dick was driving me crazy.

After a few minutes, my brother whispered in her ear, and I couldn’t hear him. I thought something was wrong and I got nervous, asking “what?”

That’s when my brothers wife told me that he wanted us to have sex if I was ready. I was still so nervous but said yes after a minute.

She straddled me as I laid down on their bed. She grabbed my dick and slowly sat on it, going up and down nice and slowly for the first few strokes. She began riding me faster and faster, now grinding back and forth for her pleasure. I heard her breathing get louder and saw her face tensing up and after a few more seconds, she came all over my dick. I could feel and smell her squirt all over my stomach. She then brought her legs up into a squat position, and held my hoodie for leverage as she fucked the shit out of me. She kept telling me to cum in her pussy, calling me by name. It was so fucking hot. Being so nervous, it took a good while before I could finish. So long that she asked if I was close at all. Although I was having a hard time, she kept riding my cock like it was her mission to make me cum in her pussy. Telling me to cum in her pussy again, I finally busted my load deep inside of her. making the most feral noises that have ever come out of my mouth.

Once I finished inside of herr, she got off of me and turned to my brother, sucking his dick until he came in her mouth. Once she swallowed his load and we finished up, I went to my room.

My brothers wife came in my bedroom and grabbed me and hugged me tight, asking if I was okay and if I enjoyed it. My brother followed in soon after and we hung out on my bed talking and eating jellybeans lol

I’ve had multiple interactions with them besides this one, let me know if I should share more…

Edit: Here's the link to a new story I posted about another threesome I had with my brother and his wife



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