Ive been with my boyfriend for 3 years. Hes 21 and im 18. We broke up a while back because i found out he was still obsessed over his ex and hiding things from me. When we broke up, i slept with my boyfriends ex best friend. Ever since i did that, i cannot stop thinking about how much better the sex is with his friend than him. My boyfriend and i got back together, but i still want to sleep with his ex friend like sooooo bad. It was some of the best dick of my life. I dont know what to do.