We broke up a year ago

So I dated this guy for a year, and then right at the 1 year mark we split. A month later he was dating someone new and i flipped. I thought he must have been cheating this whole time I was livid. I was bashing him on Twitter etc. He ended up having a child with this girl and recently (last night) we actually saw eachother since the split. We talked about a lot he explained even thought I thought he cheated he never did and I could tell he was being genuine. At one point I was talking about how he used to say I was his forever and he legit looked like he was going to cry. And I said we could have still been happy together if we never split and he said he knew and he screws everything up. I asked if I'd see him again and he said he isn't sure he has a lot to figure out (with baby mama) I'm trying not to get my hopes up because obviously I don't want this baby to have a broken family but at the same time from what he hints at and his friends say he's not happy but staying cause the baby. When I left he ended up hugging and kissing me (cheek)bye and I just can't stop thinking about it. Do I just need to get over it or what. I guess I'm just hopeful we can get back what we once had but with his new child it makes it totally different. 
Edit I never put the thought in his head. If he's unhappy that's on him. My parents are divorced so I wouldn't wish a broken family on anyone.