You do not have to show him a thing....nada, nothing.
If he wants something of his, let him text you and you can put "his stuff" out on the porch or, move all his stuff to a storage unit.
You are your own worst enemy, you keep doing this to yourself.
Have you been to your attorney lately? I would go and discuss your options, only you can stop all this insanity. He holds no power over you, it is only your preception of power, not reality.