I haven't been in your exact sitch, but I have spent a lot of time with 5 year olds over the years, and I've never seen one who could refrain from talking about what he was thinking about. I don't think it's developmentally appropriate to expect your son to not talk to you about the AP.
That's a raw deal for you, but I think the change is going to have to come on your side, not your son's.
Me: 44 H: 44 Kids: 20, 16, 16, and 10 Together/Married: 22 years H announced he was emotionally detached and considering D: 4/4/16 H announced he is going to try to stay and reconnect: 5/1/16
