I Am Confused About My Feelings

Why do I want to get back together with someone who changes his mind so much? We ended on bad terms but when we got together to try to smooth things out I thought there was maybe some hope there. I guess not afterall because he is out shooting his mouth off talking bad about me. Passing along stories about how I jerked off a cab driver one time. Said I went around giving out hepatitus, which is wrong because I never had that. He probably got it from one of those 18 year olds he chased after. Made remarks about bj's saying mine were basically gum jobs these days. A lot of rude things. What was the point of smoothing things over if he's just going to start problems again? I want to be done with him for good but I can't seem to tear myself away. He had it good when he was with me. I cooked, did his laundry, I cleaned. I just feel mad all over again but the part that has hope won't let go.