Am i wrong?

My boyfriend and I have been together for almost two years and we are expecting. In the beginning of our relationship, him and I were great. A couple months in I caught him texting good ex girlfriend and when I asked him he stated that he doesn't know why she texted what she texted that he hasn't talked to her since we got together. I didn't believe him and he admitted that they texted buy only that one time. Several other little things such as deleting messages on fb, meeting up with his ex because he wanted to let her her it was over and other things happened around this time last year. We broke up in Sept 2014 and got back together Feb 2015. Throughout the months we broke up we still basically talked everyday although he had moved on and as did I. Now I'm 11w pregnant by him and yesterday I caught him fb messaging his ex (the same as a year ago). Again, be deleted the messages and the only message I saw was "why should I take any advice from you" I broke up with him. First he was all sad and apologizing now then he is rude and doesn't want anything to do with our baby and then is nice and so on. I didn't let him come home. I really think there's no fixing our relationship anymore although I feel bad for the baby. :( Any advice?

BTW he has a daughter with a previous gf from when he was 18. His daughter lives with the mom and his ex gf lives with his daughters mom... So it's not like I can give him an ultimatum, he has to see his ex gf to pick up his daughter. But his ex gf is not the mother just simply lives with the mother. This is a messy situation. :(

I can financially support my child without him or any government assistance I'm just curious as to what you ladies would do if you were in my shoes? I posted this anonymously because I'm utterly embarrassed with my situation.