Same here. My ex, DF to our children, who was more than happy for my DP to contribute to his DC’s uni costs. Shame on him, have some self respect, I would be mortified if another woman was picking up the costs of my child ( he then brazen faced attended the graduation ceremony😡!).
DP had already paid to support his own DC’s through uni, he shouldn't have had to contribute to mine.
My DC’s were expected to work though. My contribution started with three months grace for them to find a job. I would have stopped some of it at that point if they hadn't. Important that they contribute.
Same as child benefit, affected by DP’s wage.
Yet my Ex DH claimed successfully for a discount on his maintenance payments because his wife’s child lived 50/50 with them. This child had two full time working, high earner parents, whilst I struggled for years on my own bringing up two on much less money.
Ex’s discount for one child, was more than he had to pay in maintenance for his own two.
The tax payer picking up child care costs too.
No wonder men can walk away and procreate.