I accidentally fucked my exgirlfriend in front of her little sister

I (M30) only recently became aware of this after reconnecting with my Ex for coffee. About a year out of high school I was dating my long distance girlfriend and we would trade off spending holidays together at each others homes. One year while I was staying at her house, her younger sister and I got into a habit of trying to scare each other by hiding in different places in the house.

One day in particular, my girlfriend and I thought we were lucky enough to get the whole house to ourselves. Her sister was supposed to be a swim team and her parents went out Christmas shopping. We pulled into the garage. Yelled in the house a few times then ran up to have sex in her room.

We went into her room and closed the door, making out while tearing out clothes off. We made out, I went down on her, she went down on me, all the typical things before having sex. I remember it pretty well cause it had Been forever since we had sex. Her family didn’t expect us to be prudes of course, but we never had the chance to do anything more than cuddle or kiss while the family was around.

I remember we had been fucking for about 10-15 minutes before she came, and she asked me where I would like to cum. Usually I had always cum in the condom, but she said the since it was a “special occasion” I could cum anywhere I wanted.

“Even your face?”

“Even my face.” She laughed.

It didn’t take much convincing from me. I laid her on her back and pulled her butt down to the edge of the bed. I fucked her for a few more minutes before I pulled out, she slid down to the ground and I came on her face, neck and chest. It wasn’t the first time I had ever done that, but it was the first time that wasn’t from a late night tipsy blowjob. Haha 😂

She handed me her phone to take a few photos and then we went into the bathroom for us both to shower.

After we got dressed, we heard her sister come home and we acted like nothing had happened.

We ended up breaking up the next summer, and we were friendly enough to keep in touch.

Fast forward to last week and my ex had coffee and were catching up while reminiscing. She is married now, so nothing crazy, but we were being blunt and honest. It was only after we traded stories about our first time that she brought up that apparently her sister had seen us have sex that time.

Her sister had never gone to swim team and decided to try and scare me by hiding in the closet. She heard us calling for people, heard us come through the door, but totally froze when we started taking clothes off.

It took my ex a few years to be told the whole story, but apparently her sister watched the whole thing and had a perfect view of the whole event including the facial.

I laughed it off with her and I told her to tell her sister that I was sorry, but I have been insanely turned on by the whole thing ever since. I have a exhibitionist kink as it is, so to be watched and not have known about it was kind hot. Anyways, that’s my new old story.