Friends with benefits

so I'm currently a sophomore and I recently lost my virginity to this guy but one thing I can't get over is the guy I used to talk to for a couple months is friends with him and I feel completely horrible for what I did and this guy still likes me. I lost all my interest for him but I still care for him believe it or not. I wanna cut him out of my life because of what I did but I don't know, still kinda confused and ashamed that I did that to him :/