heartbroken and stuck

Roper18
So I literally cannot get this guy out of my head....background info....he's a friend of my Roomate we matched on tinder before I met him then walked into dinner with my Roomate and some friends from backhome and he was there he never said anything about the tinder thing he came to party with us a couple times ended up in my bed he tried funny business but when I made it clear I wasn't up for it he was just fine with cuddling. Then a couple months after he had come up we hadn't talked what so ever we started talking for about 3 weeks or so then he just stopped talking to me I went home with my Roomate for spring break he went out with us the first night there he didn't say a word or even look at me all night and we ended up sitting next to each other all night. He comes up to party with us again first night it was like nothing happened he'd flirt a little but act like a friend the second night he brought a girl to our party he would go hang with her then come flirt and hang with me for a bit then he'd flirt with one of our friends then repeat. Talked like friends since a little flirty going on but nothing like before I see he has a girlfriend on facebook and it hurt but I'm happy for him him and his gf come up and go out with us she is super nice but he still would make little comments that made me wonder if there was anything left.....I know it sounds like he's a fuck boy player but is is really just a good ol boy type and I know it's not an excuse for any guy to act that way but he was goin through that party boy phase my brother did the Same thing...... I have not been able to get him outta my mind since the first night in my bed....I need tricks To move on I judge every guy I meet against him!!