Who knows? He might be doing it just to make you angry (which it is) or he might be doing it just because it suits him?
He's comfy, he's at "home", he probably doesn't really want to move. He's used to living in conflict, that's his norm so this isn't really anything new. As you have mentioned, he can just sit there sometimes as if nothing is going on.
To YOU, the sky is falling, to him, it's kind of a normal day? What's the rush?
Anyway, that's his side of the street.
On your side, you need to take control of this situation and basically ignore what he is up to. However possible you need to separate your life from his. When you cook you cook for yourself, when you do laundry you do that for yourself, you clean up after yourself. Separate, distance, detach.
https://www.soberrecovery.com/forums...rty-lines.html (Detachment - Property Lines) "Today, I will work at developing a clear sense of what belongs to me, and what doesn't. If it's not mine, I won't keep it. I will deal with myself, my issues, and my responsibilities. I will take my hands off what is not mine."
From Melodie Beattie's Language of Letting Go.