Anonymous wrote:Don't rely on a conversation or promises. Your father is never with your kid without you present. The end.
Yes this.
Having a conversation with him only opens this up to discussion. It is not open to discussion. He doesn't even need to know that this is a rule. Just make sure it never happens. Only mention that it's a rule if you are absolutely out of other options for why your father can not be left alone with your kids.
My kids have loving grandfathers and only one has been alone with one of them for just a few hours. Older men aren't that interested in baby sitting. Your mother will be the problem here, since she also can not be trusted because of her past actions. But the same rule goes for her too.