Sounds to me like you and H are getting it together. Ya kinda found a common enemy (13 yr old bopper).
But seriously, I think you’ve struck on something that works. You’ve managed to find a way of putting yourselves on the same team. It kinda reminds me of something you once told me (I think it was in an email), that an handicapped kid can either bring a couple together or tear them apart. I think that the same thing applies to “normal” kids, too.
IMHO, the key thing for you and your H is to find as many common goals as possible. Y’know. Put yourselves on the same team. Of course, he won’t look for things. As usual, it’s up to you, but once you’ve found a new common goal, he’ll buy into it. And you’ve just found another “thing that works.”