Welcome back...glad the trip was a good one...and too funny about the ex!
Sounds like your H is trying to be supportive and loving to you; sometimes I feel it's a bit of role reversal from the sterotype---my H wants to feel loved and that it's not just about sex. He seems to shut down when he senses my neediness, and then follows through at another point in time.
What typically happens at this point? Do you push for the sex, and he responds to your asssertiveness? Do you do some version of self-soothing and wait for him to take the reigns? Either way, he has to push through his stuff to come forward...and I think that's the part that's so frustrating, that there is all this baggage that has to be gone through which prevents a natural, spontaneous sex life. Some days I have more patience than others...hang in there!