OK I'm fully prepared to be told I'm unreasonable about this and an almighty snob but this isn't something I want to speak about to anyone I know as it wouldn't be fair. I will qualify by saying this is not to goad anyone.
My DB is divorced and has a 14 year old son. They both remarried but my 2nd SIL was quite demanding and controlling and set in her ways. I liked her, but other things have come out since she left him almost a year ago and I can see how she put him down. My DB has now accepted it's over and they are selling their house. He lives in it, she has gone home to her parents and things are under way for his second divorce. She told my DB she wanted a child, but not with him, as she didn't want it to have ADHD. My DN has ADHD. It is not a massive problem for any of us and it is controlled and he is doing well at school.
My DB has now met another woman who is also a divorcee single parent with an 11 year old son. He says it's not serious and they just go out for a meal and walks, and I expect they sleep together but I wouldn't ask him that. My DN knows about her and he has begged his dad not to bring someone else into the house as he can't stand any more arguing and he wants it to be just them. He said he was relieved when his stepmother left. My DB says he won't be doing that. His ex has told him under no circumstances can he bring anyone back to the house, but he has done.
Out of curiosity (I guess you will tell me I am 'stalking') I found this new woman's socials and I'm not impressed. (Yes I know I don't have to be). She shares stupid memes, says awful things about her ex on social media, dresses a bit like a Love Islander. He's an adult, of course and can do what he wants but I'm bracing myself for the fallout when both his former wives find out.
I won't be saying anything more to him or to anyone at all. I haven't asked him anything. I guess I just want to vent about it and feel a bit worried.