Im still bitter, shes screwed me over so hard I will hate her forever... however for the kids I will be as nice as possible during our interactions.

However she is starting to call the kids when they are at my house, every morning before school, every evening afterwards.

At first I just let it go as Its their mum and I shouldn't show my frustration, however its really starting to piss me off. When the kids are with her, I see it as their time with their mum and unless the kids call me, i leave them to spend time with their mum.

Do i need to grow up and stop being such a baby?

Fyi, children both have mobile phones so I cannot just 'not answer '