I wouldn’t give him that sort of attention. Just talk logistics in a polite manner.
Accusations , arguments, any type of attention shows him that you still care. Indifference is where you need to be. People like him, feed on attention and the idea that two women are fighting over him - which is how he would perceive it.
They know what they did and did it anyway, so any rational talk you want to have with him is just a waste. I think a lot of us protect who WE are onto them and you can’t do that. They are different people.
