i still like him but is he worth it?

A while ago i was just friends with this guy and then we chatted more and admitted we fancied each other. So he asked me out. I said yes but could we not go too mad as we had been getting on so well as mates lately. He agreed. It was all good then a week later he dumped me. We talked about it and he said he still fancied me but apparently the convos etc didn't flow as easily. I still liked him. And then a few weeks later he startd going out with another girl but didn't tell me and i found out from a friend. Supposedly he didn't say because he didn't want to upset me. Fell out with him after we had an argument but then made up. Got to as good friends as we were again. He is still going out with her but my mates say he seems to like me more than he likes her and he doesn't act any differently with her then he does with me. She is in the year above us. I don't want to like him in a way as he must not be interested but something about him makes me like him so much.