What do you think of this...?

There is this guy I like a whole lot. He understands my pain, and the way we think is very similar. He is 22, and I am 17(I'll be 18 in four months). But we have really deep conversations and he knows that I am an outcast in school, and so was he, and he just understands me SO much. But I am scared all at the same time, because when he started talking to me, I found out he had a girlfriend, (and he did talk to me Intimately too). When I found that out, I started to avoid him until now. He doesn't have a girlfriend anymore and I am starting to talk him again, like we use to. The only problem is, is that he did state that he is not looking for a relationship, and he is coming out to NYC, and I am going to see him then (he lives in Washington, and I live in NJ). But it seems as if now he is more interested in having sex with me, then he is really getting to know me. And the thing is I am really excited to see him and spend the day with him, but I do have feelings for him. I am just scared he will use me, or I will get really hurt in the end. But it's like I feel so alone and I use to cut myself and I have a really bad past, and he knows all of this, I basically have shared everything with him, and he has shared quite a bit with me. But it's like I am afraid of getting hurt but I like him so much and I don't want to lose him or to stop talking to him, because of how much he understands me. I don't know. What do you think?