Thanks for the replies! It's wonderful to be able to talk to people about it.

I still don't understand why any human being would treat another this way.

We do have some sort of connection with each other that I haven't had with any other guy I've dated, and he's really sweet and caring when we get together. It's hard to think that everything was just an act, and a part of me doesn't believe it even now! When he said he wanted a relationship with me before, I'm starting to think he was just doing everything he could to get me into bed. I even called him out on it, but he denied that that was his motive.

Do men like this ever change? He's almost 30.