Split with dc dad years ago. She's now 8. For the first 3 years he did very little and was generally shit and lazy. Then he got with one of our mutual friends and started doing more ie 30% he constantly undermines me ie we decided she would have school dinners and he starts making packed lunches, I pay for school club but he decides he'll pick her up when he can. He feeds her rubbish too. He's got no respect for anyone or anything. Anyway I've always been too soft still done the father's day gifts and xmas gifts. Been friendly and always polite when he questions or undermines my parenting. Basically she's gone back to school and he's changing boundaries and basically being a pain. Aibu to just be formal now ? Im fed up of being nice