Yah, jeezum crow, RW. "don't sound so final" What???
X did something of the same. I was asking him to move out, saying things like we would separate out our insurance policies (you know, responding to him saying he is "done") and he says..."are you trying to speed this process along?" ??
So your H isn't unique in the depths of this denial. Hopefully you can just shake your head in amazement and let it wash off you--water off a duck.
I don't have to tell you how much my heart reaches out to you--you have felt the same pain and empathy for the rest of us. We truly do know how the other feels.
I hope you have some plans for your own self this weekend.
Take care of RW, too! I encourage you to go out into RL and tell whomever you need to tell what is going on. It isn't going to be a secret forever, and you need your support team. What he does to bolster up how he feels about his decisions is up to him.