My husband has a 9-year old son. He has been divorced from his ex for 8 years. They don't get on, and mostly communicate via text or a mediator.
Over the years, my husband and his ex have often disagreed with each other's parenting styles. For example, my step son has no set bedtime at his mum's house (and never has), which my husband disagrees with.
About 18 months ago, DH's ex told my husband that she had a new boyfriend and was planning on moving in with said boyfriend ASAP. They moved in together after about 6 months of dating. My husband has met this man once. He said that the man was polite but didn't give away any details about his life. For example, he wouldn't say where he worked or what role he does, just the field he worked in.
Since this man has moved in with my stepson, my stepson has not mentioned this man once. Whenever I, or my husband, ask stepson what he did last week/ at the weekend/ whatever, he never ever mentions this man. It's as if this man doesn't exist. However, this new boyfriend definitely does exist as we often see him/ his car when dropping stepson off at his mum's.
Both my husband and I don't want to pry as it isn't really our business what happens at his ex's house, but it just seems a bit off?
My stepson talks about me to his mum all the time (I think she asks him about me). Over the years, she has often criticised the things I do to my husband. For example, she doesn't like some of the food I cook for stepson.
To be clear, stepson shows no signs of abuse/ neglect, so we aren't worried about that angle.