Just be strong dear. He wasn't there when you needed him the most. I understand your craving for your father's attention. But does he really means what he says?? I would suggest that you maintain a co-ordial relation with him and not read too much between the lines. Give time to both of you. If he calls you up and says the same things when he is not drunk you might consider giving this a thought. Till then, just be formal.

Its easy becoming a Father to a child. The real challenge lies in being Daddy!!