commitment issues

so my story goes like this. i was with my x for almost 5yrs, he has cheated before and i took him back but then he tells coworkers low down things about me to get them to listen and treat him like a victom. he joined dating sites and started talking to many women behind me and his brother encourages him to see other women and not settle for me since his brother got dumped by his gf. he crashes his car, i help him out because he calls me. then i find out about all the women and that he was in a rebound for two weeks when we didnt talk. the chick dumped him n said he was too nice and clingy. so whats he trying to prove by all this? i left him n told him, i thought about it and i cant spend one more minute with a man like you, im done, have a good life! his response to my txt is f u then peace! so i am not talking to him and i really am confused if he ever loved me and if he was going to ever marry me. he told his rebound he didnt see himself marrying me after 5yrs so maybe thats it then? i cant take one more abuse, lie or cheating again from him. i wonder if he will come back as a whole man? someone with loyalty and someone i used to remember that loved me. he became so lost n brought me down n carried on with friendships of chicks who he told foul things about me to n yes they liked him and stroked his ego. i want all games to just stop so this is where i am.