You guys are going to hate me for saying this (Please remember I consider both of you to be much higher functioning 4s than my H at the moment) but when I start thinking grinchy thoughts about my H's 4ish negative ambivalence they run along the lines of "He's going to be unhappy whether he's with me or without me but I could probably happier if I didn't have to deal with his negativity so the net happiness gain solution for the two of us would be for me to leave.".
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver