My husband shares DC with his ex and we share a DC together too.
I'm away at the moment for a friend's wedding and he's at home.
My husband was out today with my MIL, BIL and his wife and DC. I've just found out that his ex, mother of DC went along too. He didn't tell me this but my BILs wife did (we are close).
I've spoken to DH and he said he didn't think it was a big deal apparently when he picked them up DSC suggested their mum come with them because she had nothing to do and DH didn't want to say no to them (a running theme).
She's recently split up with her partner and has been telling DSC how sad she is about it... So they've been feeling guilt ridden about leaving her alone. Nice.
I don't think anything is going on, they don't even like each other half the time but she's manipulative and not someone I want hanging about with my kid and playing happy families on days out with them.
I'm absolutely furious about this actually and I think my husband knows that and wouldn't have mentioned it if I hadn't have found out.
I've told him if he has any respect for our marriage he won't hang out with her again whilst I'm gone especially not with our DC.
My SIL was shocked as well hence why she told me and said MIL found it awkward too.
If it matters at all they were never married and weren't together that long so not like she was part of his family for a 30 year long marriage or anything. MIL doesn't like her either.