I agree with Starsky. Detaching does not mean ignoring! It does not mean being passive aggressive!
Take a breath and grow up. You are angry...we are all angry, HP. My WAH walked out on me a week after he said he wasn't going to. I never cheated on him-- I was depressed and had PPD. I didn't deserve to be treated how I was treated.
But how does it help anyone to be nasty to him? Every single day I see him I have to sukk it up and put on my happy face and treat him like a distant neighbor or co-worker I don't particularly like.
You are running a "business" (your son) together. Think of a co-worker you don't like. Do you get to say "yeah" when they call you? Do you get to ignore them? Do you get to act nasty? No, you act polite and then in the privacy of your own home you can tell them to F off.
Are you talking with your IC about this? It's so important for your son.
