I've known them for almost a decade. The relationship really wasn't long or even that much of a relationship. We were friends for years but he kept making advances at me. Finally I decided to give him a shot but it was a bad idea. I know he can't help the way he is but he's also gone over some lines that I know any intelligent person could see. He's very verbally abusive. He's intelligent academic wise but has also non-existent emotional and social skills. Right now to him, I am the devil. He sees him as the reason for everything bad that happens to him, even his failed previous relationships before I even knew him. I think the only thing to do is ignore him.