Yesterday, I emailed H a casual invite to stay the night if he wanted and he replied, OK, that would be nice. I also was asking him about some arrangements regarding D. In his reply he completely ignored that, but told me at some length about his plans for travel and his project. I think there is a big opportunity for validation here, but I had to repeat my query and he replied in just one line that what I planned was fine. I just hope that later he doesn't come down on me like a ton of bricks: this has happened in the past, when I have supposedly just "gone ahead and done what I liked".
Anyway, we have returned to a friendly exchange of emails for the moment.
Livnlearn
"The unexamined life is not worth living" - Socrates