Don't know what to say. I would try to somehow "kill" the power stuggle pattern. If your goal is to be happy together, you need to break this. Be free from it. Make him look stupid for doing it, so he can finally act reasonably and not react to what he thinks you are doing. He seems blinded by ... anger? urge to be right? need for control? I am not sure I can explain it properly.
Being firm and stop reacting to his BS is a way to that direction. Is there any other way you could take his "guns" from him? Just my 2 cents, I am amazed by you two guys, "like a dog and a cat in love" as we say... K