Wow - I wonder if S has some inkling of what his dad is up to. That is an interesting question for an older child to ask, right? Might be worth having a convo with your son (NOT about H), but just about cheating in general and what his thoughts were on the movie. He may be looking for some sort of moral guidance from you guys.
From personal experience, I think I picked up on my dad's A before anyone else did as a child. Children just have that sense IMO. It certainly didn't make his A hurt any less, and it's made a profound impact on me as an adult.
