Most Helpful Guy
I can't speak on behalf of all guys or even the one your talking about because i don't know what type of person he is but i know that when i personally get out of a relationship with someone i try to focus on all the negative things about them and force myself to hate them, Its just my way of trying to stop loving them and missing them. Believe me if its real love, a break up will hurt a guy just as much if not more then a girl. If he's going out of his way to be mean for no reason then he's just an idiot and still has a lot of growing up to do.
Most Helpful Girl
I'm sure he has been talking to her the whole time and who knows what else- some guys are fucked up like that. And then they expect friendship and things to be cool between you.
Just cut him off babe. Don't waste your time.