What do I think now?

So after me and ex were over and trying to forget about him, I started dating his cousin. Bad Idea. Well it was going good and all with me and his cousin but then him and my ex were hanging out and yeah I knew they would but w/e… Last night he told me he didn’t want a girlfriend right now but he still wanted to be friends… and I said you didn’t have to date me… And he looked the other way… and kinda just blew it off. I said I didn’t want it to be weird around me and him.. and he said he didn’t want that. but yeah I keep seeing him every where. I dunno if I like him a lot I don’t know what to think really… I still like my ex.. but I dunno he was laughing about it last night and he just kept on looking at me. I told his new girlfriend that he cheats cause he told her he doesn’t. well that’s bullshit… but yeah I dunno what to do… what should I do…? I feel like I’m hiding everything from everyone. I use to show how I felt but not anymore… Help me please…