Help me understand him :(?

I had a very similar situation with a guy. He was unavailable when I wanted him, but then I'd try to date other people and he'd start being all romantic like he's always loved me or something. Then one time he was mad because he had been dating this chick and they broke up. He told me it was like she was keeping him on the back burner in case she didn't find a better guy. That made something click in my head. *DING!* That's what he was doing to me. I have dreams about him all the time. We talk and it always ends up different. Sometimes he listens to all the things I've always wanted to tell him, and sometimes he cuts me off or gets mad and leaves. I spent a lot of time trying to figure this guy out. the funny thing is that HE is the one who always persued me. From the very beginning I thought he was cute but I never thought of dating him till he made the first move. I am still confused because there is a part of me that wants it to be the fairy-tale ending and he'll finally realize that he loves me. But I know that as long as I obsess, i will never be able to be a full person. I feel like a part of me is where he is while I live this other life. i got married and have a kid and I love my family, but I still dream about this A*hole all the time. What is wrong with me? I know it's bad!