At this point, you won't want to forget him at least in terms of child support. You would need to find out where his heart is as well. Is the father now involved with the other mother? This would complicate things. Since you are involved with the father's family you at least have this connection going for you. It sounds like he hasn't shut you out, so you still could have a chance. Just be a stable and calming source to him but don't let him take advantage of you. Find out where he stands before any future intimacy.