What would you do about your ex?

Me and my ex broke up on june 7th, he calls me and says we're best friends, but I think a friend would never treat a friend like he has done me. (Refer to other post I put up about him} anyways he calls me like im his get bored *****, only when he's not on the phone with his friend. He used to do the same **** when we we're together, he'd call only after he got off the phone with his guy friend around 2 am. So anyways he calls and I get the vibe he's tryna make me jealous by telling me how many girls hit on him. Everytime he calls he says something to try to make me feel bad, he calls me a lepracon because I'm 4"11 but I just smile and say short girls are hot. Why do you think he's doing this? Is there a way to get even? And is there any way to let him know I've moved on and he needs to also? Sometimes I miss him and then he'll call and open his mouth and all of a sudden I'm asking what did I see in him. Your advice is greatly appreciated. Please help. Maybe I'm just too nice, and I let people walk all over me, I need to change I just don't know how. Xoxo trish