My brother is a different girlfriend every 5 minutes type. He always pushes them onto his family, rocks up with them for a family holiday or Christmas day etc, insists I should do X Y and Z with them, gives them my number, tells them to add me on facebook etc. I've got sick of this as I start to develop a relationship with the girl and then he dumps her and I miss the person I quite liked.
I have no relationship with him normally. He only bothers with me when there's a girl he's trying to impress, for context.
The latest one I resisted bonding with for ages. Also resisted bonding with her children. Wasn't mean to them, obviously, just didn't go out of my way to play with them etc. Then they split. And then they got back together, and we have bonded. I care about her and the children. They've just been on holiday together etc, it seemed like he wouldn't mess this one up. And then he dumped her.
She and I were planning a night away, a city break, soon. Her kids birthday presents are wrapped upstairs. She told me she's really sad we can't talk anymore, and I said no, why can't we? He is not my keeper. So, we are staying friendly. He is texting her abuse about his things he's left at her house and I offered for her to drop them with me as she doesn't want the children upsetting. She has done. This morning he has text me two abusive messages (and then I blocked the number) that I am no longer his sister, I am dead to him, I had better stay away from him for a long time, I'm a fucking disgrace.
AIBU for actually remaining friends with this girl? She isn't slagging him off to me, she hasn't attempted to. Why shouldn't I be friends with who I want to be and why does he think threats will stop me?