Last year I became fairly good friends with a nursery mum. Our DCs were and still are best buddies. My DH also became friends with her. She's a single mum and by her own admission is very vain, a perfectionist and very flirty.
Anyhow discovered a series of flirty texts between my DH and her and confronted him. He said sorry, was fascinated/jealous of her lifestyle (shares custody of her DC so spent half the week as a single young woman) but said it was nothing more than messaging. He found her "fit" but nothing would ever have happened.
We moved on eventually but cut ties with her. Still saw her everyday at nursery but no longer spoke.
Now (6 months later) we're speaking, friends again on FB to share photos of our DCs at their respective parties, and I feel comfortable and I'm happy to be friends again.
AIBU? I feel like it was a serious issue my DH and I faced last year. He apologised, she's recently apologised for her part in it (she also stressed it was just silly messages, no more no less). I actually still like her. But I feel like I should hate her