ExH and I split 2 years ago. During divorce process it became apparent he had spent thousands from our joint savings without telling me (accounts setup in his namefor convenience I thought) - I also think he had loans I was unaware of but can't prove it.
We have an agreement for 50% care of children and arrangements including (I thought) children's savings.
Yesterday he asked me for childrens passports, it took me a while to get out of him why, but he says it's so he can set up savings accounts for them that his parents can pay into.
Given his track record I'm not happy about this, his parents don't know about his previous spending because I haven't discussed the circumstances around our split with his family (he spent it on online sex workers and porn). I don't know what to do. Don't know if I should tell them, his mother is in very poor health and I don't want to cause unnecessary upset. But i don't trust him at all not to exploit their goodwill.
He says it's none of my business, and maybe it isn't. How do others arrange children's savings? What would you do?