So for backstory, I 19F basically met with my exes best friend 19M and we hit it off. Advance about a month later, me and my ex 19M have gotten back together after we talked a few things through, everything was going alright so far in the relationship but some part of me was feeling unfulfilled, I couldnt find out what it was until my boyfriends best friend dm’ed me asking if I was doing alright since me and my ex got back together, I obviously lied and said we were doing good and he left it at that. Later that same day me and my friends decided to go to a party where I see my exes best friend in the corner talking to his friends. Eventually later in the party I go outside for a breathe of air where he follows me outside and we sit there and talk where I start crying because I cant find the spark in me and my exes relationship anymore, he leans in for a kiss but I deny him saying its not right. He leaves me alone for the rest of the party. Later in the night around like 12:30 the main party cooled down and we took the after party to my exes house where I just decided to try and lay down in “our” room to cool off, when my Exes best friend does the same thing about 15 minutes later, instead of trying to make a move on me he just sits on the corner of the bed and confesses his feelings for me, and instead of pushing him away I started hugging him, he started trying to make a move again and instead of stopping him I kissed him, we were making out while he was undressing whatever the lousy excuse for a top I had on. This time felt different, it was the perfect mix of guilt, and the idea that what I was doing was correct. after making out I was all out of breath while I was taking his shorts and underwear off, I started teasing him with my lips on his dick until I started sucking it, getting so close but failing to deepthroat. Eventually he stopped me and threw me onto the bed, he pulled off my short jean skirt with my panties, he started teasing me when I said “just put it in already” and he said “see this is what happens when you play me, I play you” after all the teasing, we had about the best 10 minutes of sex I ever had before I saw my wasted ex stumble through the door, completely ignoring us until he walked out the bathroom where he tried to tell his best friend to “stop” because “she doesnt like it”, I told him not to stop and keep going, in the midst my ex falls to his knees in a drunken cry and only gets up when I tell his best friend not to stop, this happened to be my exes breaking point because he sucker punched his best friend while we were going at it. All of a sudden we stop and they start a full on fight over me where my ex leaves the room screaming “she wanted it”. After a while and watching my boyfriend cry on the edge of the bed the party eventually died down. I took a shower and laid down on the bed again, right when I was about to sleep my boyfriend starts making advances on me, begging crying and pleading for me to have sex with him. Eventually I capitulated to him, letting him have his way with me in what was probably the most uneventful and boring session of my life. He lasted a solid 5 minutes before cumming mid stroke, it was so bad I didnt even moan once. After he came in me he asked me to marry him, and thats where I left.