also: good luck with the confrontation where you try to get him to understand all this.
Could be useful to break it down to really simple statements of fact rather than launching into any psychological explanations about modelling and reactions to abuse, as that may be several steps of analysis too far for him at this stage?
I fear that if you say something like: "I only swear at you and act aggressive, which I never did before, because of the way you treat me" (if that's what you're planning), it gives him a wide open door to say: "Well, that's the case for me too! I only do x, y and z because of the things you do and the way they make me feel!"
Because he would be entirely correct and truthful in saying that: abusers do think that you are responsible for their feelings.
Simple statements of fact could be something like: "You do x, y and z. This makes me feel like a, b and c. Stop doing x, y and z." And be prepared to leave if he continues with x, y and z. Ie. to spare your own feelings if he won't do it.
God I hope I don't sound too prescriptive. I'm just pessimistic about anyone with an abusive personality being able to take any kind of responsibility without throwing it all back in your face and making it your fault, somehow. So I'm thinking the simpler you keep it, the less they have to twist around.