Fucked a friend’s girlfriend at a party

Fucked a friend’s girlfriend at a party “Oh this is going to be fun “ she said, turning a round and began sliding on my cock until it slid inside her pussy.I held her ass while she began sliding in and out on my cock. I finally said that we should get going before Mary and Sam started,and she agreed. Even tonight they went out and told Mary they would be gone for a couple days. “Sam has sex with me but most of the time he has to wear a condom ,do you have one?” . My sister and her girlfriends wanted more

My sister Mary looked after me since the day I was born and continued to feel she needed to this day. I finally said that we should get going before Mary and Sam started,and she agreed. “Sam has sex with me but most of the time he has to wear a condom ,do you have one?” . She then said that she would be having me the rest of the night. “Sam has sex with me but most of the time he has to wear a condom ,do you have one?” . Mary leaned down and whispered to me “did she know that I came first”?