Ditto on the extra food at supper.
It sounds like my husband is more supportive than yours (of course, he LOVES me being thinner), but I've always tried to make a starch I know he enjoys to go with dinner. Or, extra veggies for me that he doesn't necessarily care for.
Take last night....chili in the crockpot, made with lean ground beef (his request). He eats just that, with saltines on the side. Not enough veggies for me, so I made a side of asparagus (weird combo, but I like asparagus

), and stole a piece of cold leftover sweet potato (which I also love). He was happy, I was happy.
I'll often make mashed potatoes or potato wedges for him as well.
I think the extra veggies is my saving grace as well, since that fills me up with lower calories than other things available.