Just in general aswell but my brother and ex split when his dcs were young. His daughter who's 6 wanted her ears pearced he wasn't keen and expressed that to the child's mum. And she went ahead and got them done.. Basically she said I can do what I want I don't need your permission... Not that he said he wanted to give, 'permission'. Hut thought it should be a joint decision.
He said what of it was the other way around and I went ahead and done it know you weren't keen (he wouldn't,) .. Her reply was you have no right to and went mad..
Even tho he has pr etc. Why does she think its OK for her and would if it was him
Thats an example and I know it works both ways