I think this is a hang up that he has been trying really hard to work on. When we met he told me he wasn't going to date anyone else with children, as all of his previous relationships had been to single mothers. He listed the problems that he had with the relationships, the hearing 'you're not my dad!', mom always having last say and overruling any punishment he would want to enforce, if things don't work out the additional separation of losing all contact with children he grew attached to, dealing with the 'other' father, etc. All situations that I thought with the right partner could be handled without much complications. When we met he was 29 years old and I remember thinking if you are looking for a single woman without baggage, you are going to grow up alone. We became friends, things grew, I think he was really trying to handle this hang up. We have had our forks in the road where he could have made other choices then continue to pursue this and further the pain, he choose to stay, he choose to try.
I don't know that this situation is real to him yet. I don't think he has really thought about facing it. I know he hasn't slept the last two days, but he isn't talking to me about it. I don't think that this is something he is happy about, but since he's not talking I don't really know where his head is.