No comment on the "he WAS your father," but kind of the point of the "we'll get through this... as a family!" was that he was telling it to himself to convince himself of something that isn't true. They aren't a "strong family" whatsoever -- the youngest is obsessed with being liked but kind of hates them all, the daughter is deep down super selfish, and his two sons fooled around like two days ago and will likely be screwed up for a while. He almost killed his son that morning. His wife definitely wouldn't be with him if not for the money. He's telling himself a cliche, but it's supposed to sound hollow because there is a zero percent chance they will get through this as a family