I have been with my DP for just over a year and living together 6 months. He has 2 DCs who stay at our home every other weekend and have done since last December.
Whilst I appreciate he has to have lots of contact with his ex for the children, it really upsets me that he has so much 'other' contact with her. Examples are chatting about her new baby, how did the birth go, weight if the baby, how is mum and baby. Chatting about her mum, her brother and other things they have in common from their old life.
I have talked to him a out this and his solution is too lay talk to her when I'm not about.
My opinion is that she has two roles, the mother of his children and his ex. And they should not cross over. I already have to listen to so many 'do you remember when' stories when the children are around (which I am fine with)... AIBU to think he should only be in contact with her on an 'as needed' basis.