Please help me understand.
Walking out during an argument - not "I need some space" or "we can come back to this later" but just "I'm off" and disappearing: to me that is stonewalling but to him that is self preservation and (by extension) preserving us. Because, I assume, he doesn't want to risk sticking around and things going wrong even more badly.
We don't live together so it's easy enough for him to up and go. If he can't up and leave (if we are away, for example), it's the silent treatment for as long as he needs.
I do not like or appreciate this. It was something my parents did to me and each other and I hated it then and now. So I see this - "please don't up and leave in an argument" as a boundary of mine that needs to be respected. He says asking him to stick around when he wants to be alone is just as much an overstep of his boundary.
So, is leaving an argument always stonewalling? And can you have a boundary that - if respected - means the other person is forced to do something they aren't comfortable doing?
(And yes, I know the answer is probably that relationships shouldn't be this much with and why am I bothering, but you know, life is complicated and so are people...)