I don’t know what to do

Hey guys, so theres this guy that I dated about a year and a half ago and we broke up after a few months. Ever since then we’ve been having sex but we aren’t together. It’s like a friends with benefits thing. I’m sure he doesn’t have feelings for me anymore, but I still really really like him. I’ve tried to tell him how I feel but it kind of just gets shrugged off to the side. I get so jealous when he’s around other girls, but at the same time we are together sexually.. like a lot. I really want him back, and I don’t know what to do. Any advice??