I've been doing some research and I don't think Tom Marin is her real father. I thinkk her real father is Wilden. On the wikia it says that he was born in 1977 or 1978 which would mean he is 39 or 40 after the timejump. Since Hanna is 23 after the timejump he would have been 16 or 17 when she was born. In one episode he was at Rosewood High and he was questioning her and she did her own research on him and she found out that he was quite the party boy when he was in high school. Also he had a bad habit of harrasing the girls but he didn't seem to harras Hanna as much. The one thing that makes sense from this theory is why A.D. is targeting Alison more than any of the other girls. If he really is Hanna's father then maybe he hates Alison because of what she did to Hanna and how she changed who Hanna was. Also Ashley Benson who plays Hanna Marin said that the reveal of A.D. is heartbreaking and Marlene King said that the reveal of A.D. will blow the other ones out of the water. Maybe the reveal is heartbreaking because the liars find out the truth about their past and we find out about Wilden's past too. Also another clue toward Wilden being her father is that he's said to Hanna before that things between him and her mother were complicated. Maybe he was hinting that it was complicated because they were trying to keep it a secret from her. If I find anymore evidence I'll make sure to add to this theory.
Good theory, but Wilden is dead. We clearly saw his body... I don't think he is alive for sure. And if he is... and if he is 'AD', then that would not be heartbreaking right? Because the majority of the fans hated him? But I clearly agree with you on the Wilden being Hanna's father part, if that's true.
I think it's possible that he's alive because we have seen a person's body before but it doesn't mean they are really dead. Besides in 6x10 Charlotte used something to knock Jason and Kenneth out and it looked like they were dead but they were just sleeping. Maybe that's what happened with Wilden.
He harassed Hanna a lot more than the others.That's how he got in Ashley Marrins bed. That's not to say that he hadn't been there before Hanna was born. Could be Hannas father. I agree her father is not going to be Tom Marrin. Hanna and Alison I think will be related in some way.