Most Helpful Guy
Oh its you!
Yes he is on rebound... Of course..
Most Helpful Girl
Maybe, he remember all bad things about you so its easy for him to hate you and move on to another girl.
OR, there's another answer. Maybe, he go out with girls just to get over you. its all from yourself. be aware of what you did that hurt him or anything. if you feel like you haven't done anything wrong, then dont apologize.
he does not want his baby? you can start a new life. find another nice man! life goes on, everybody's lives goes on, so do you!