The mom is at fault, but now the guy has to charge it to the game. Still, she can only try this once. Now the guy is going to buy the kid the supplies from now on and she'll never get cash unless it's a really dire situation. At least that's what a rational person would do.
I see it from both sides.
As a man, I would not be comfortable buying my son/daughter nice things, or things that they need, knowing that their siblings are struggling. I suppose I am the sort of person who would see my ex's children (before or after) as my children in the event that I have a child with them.
If my kid wanted something like a Playstation, I would see that as something I should get my youth. I would expect my kid to want their siblings to be looked after so, in effect, it is something I would have to provide for them. The alternative would be raising my kid to not care about his family which, as I said before, is more damaging in the long run.
Why I see it from both sides is I believe people should operate with pride and integrity. I would expect the mother to realise it isn't my responsibility and take the steps required to ensure all things are equal.
I keep asking the same question but everyone just skated over it and says I’m wrong for assuming but why can’t the mom provide for the others if one is taken care of? Why is it at the point that the siblings get less if it isn’t from the baby daddy #3? Or she could ask to borrow the money but just taking is a sure way to make sure he never trusts you with cash again.
I think I covered that with the expectation that she pays me back. My feeling would be that she should take care of it, or find an alternative. I would feel some type of way about it. But ultimately my child would come first.