Bit of a long story... My husband's has a best friend who is basically like his brother. DH isn't close to his family and has known this friend since they were young, he's very close with his parents and they are basically like family. I'm good friends with him now too, he's a lovely guy, kids call him uncle X that sort of thing.
For the sake of the thread I'll call DHs friend Mark.
I am good friends with Mark's ex girlfriend from some years ago. Things fizzled out between them but they still occasionally got together or went out with us as a foursome until Mark met his now wife. When they met, Mark and his ex were in a FWB type situation and both were happy to leave it as just friends once he met his now wife.
My friend, Marks ex, has moved way on from this and would be more than happy to just be friendly but Marks wife is completely against any contact between them (made him block her on everything, not allowed out when she's there that sort of thing). His wife barely interacts with me either because she knows I'm close with his ex.
Anyway... Me and DH are having a party soon for our anniversary and Mark's wife is having a tantrum because I've invited his ex. Usually he'd be told not to go but I don't think that will wash this time as it's a big do for DH and I and he will feel like he can't miss it.
DH has made a comment that I should make it easier for Mark by not inviting his ex so his wife will feel better about him coming (she won't come if his ex does but tbh I don't really care if she comes or not I'm sick to death of all of this).
AIBU to say no, I'm inviting my friend and Mark's wife needs to grow up and if that means Mark doesn't come because he's decided to agree to orders not to then that's between him and his wife?
Just to add I've always tried to be friendly with his wife, I've never once been closed off to her because of my friendship with his ex. She's always been invited to things. She just can't stand the fact that she's around a lot at things like this because I'm friends with her and I'm not just going to end a friendship with someone I like because she can't be more mature about it.