Romance sucks

I'm going to go on a whole spiel about this because why not.

I hang around in the library everyday because I hate going outside. There Is this boy who I won't name but I really like him and I have liked him for ages, I somewhat recently broke up with my boyfriend and so instead of talking to the guy I liked I just gave up and sat behind the stairs. But now I've started talking to him a bit more and he thinks I'm decent? But I do stupid things and can't stop myself. Like downing an entire juice in one sip. He is really smart and I like him a lot but he already has a boyfriend I think. I really don't know what to do. I might just give up on this whole dating idea.