As a full and fully comprehending partner, you can join him in learning about boundaries: namely, that when properly set and held, they aren’t subject to anyone’s disrespect. You decide what behavior you’ll accept from people, and become unavailable to those who behave otherwise. She gets blamey on the phone? He says, “Sorry to interrupt, but I have to go,” and hangs up. She screams? He screens.
She keeps hurting him? He cuts ties.
