Friends with benefits

So there is this guy I met him at work and me and him started talking talking and eventually there was this gurl she had a bestfran (let’s called her tiff) so him and tiff started talkin and me and him stop messing around .him and tiff started dating . Me and Chris (we gon call him that) stop talking for a while after a month or 2 chris and tiff broke up so she’s out of the pic. Me and Chris started talking again and we started doing all these stuff ykk and couple months later he got a girlfriend and I got jealous. I started teasing him and stuff while he was with his girlfriend he told me that we’re fuxk buddies I was okay with that and my friends were really not okay with it because he was 18 and I was 14 so they found out how he was treating me . He treated me good but sum times he would joke around and call me a bitchh and stuff at one point I got a boyfriend and chris and his new “girlfriend “ broke so he became the side of my relationship and me and my bf broke up couple months . One day he walked me home at 1am and he ended up taking my virginity and he left after that , now from today me and him are friends with benefits but he has a girlfriend now and I’m in love with him but I’m moving in a couple of days and I’m scared to tell him I love him but if I do sum might go wrong . What should I do ?