i’ve been fucking my boyfriend’s best friend when he goes to the gym

hey everyone, i'm 19F and i cant believe im actually typing this. my boyfriend and his best friend have been close since middle school. the best friend is 25 and comes over to our place all the time. at first he was just my boyfriends loud funny friend but things changed.

he started staying later after my boyfriend would go to sleep or leave for the gym. we would talk alone in the living room and the conversations slowly got flirty. he would compliment my body and say my boyfriend didnt appreciate me enough. i started wearing less around the house when i knew he was coming over. tiny shorts and thin tops with no bra. he couldnt stop staring.

last week my boyfriend left for his usual evening gym session. his best friend was already at our apartment. as soon as the door closed behind my boyfriend the energy changed. we were sitting on the couch and he put his hand on my thigh. he kept rubbing it higher until his fingers were under my shorts. i was already wet. i looked at him and we started kissing. it was slow at first because we knew how bad this was but it quickly got intense.

we made out for a long time on the couch. his hands went under my top and he played with my tits squeezing them and sucking on my nipples until i was moaning quietly. i pulled his cock out and stroked him before going down on him. i sucked him slow and wet trying to be as quiet as possible. he then laid me down pulled my shorts off and ate me out until i came with my hand over my mouth.

after that he fucked me right there on the couch. first slow missionary while we kept kissing then he turned me over and took me from behind. he came inside me just minutes before my boyfriend was supposed to come back. we barely cleaned up in time.

now every time my boyfriend goes to the gym his best friend comes over and uses me. sometimes he fucks me in our bed. the risk of my boyfriend walking in at any moment makes me cum so hard. i know im a horrible girlfriend but i cant stop.