Well glad to hear that you've been emailing. I also think that it's good that he said it was good seeing you for a few days.
Maybe he really is just beaten down from school, and whether he says it or not, you can bet that he is feeling guilty and the M situation is exhausting him too.
5 nights together is a very good thing, IMO. I think if you can keep up the acting as-if, maybe this will help a little bit with his guilt. Once he realizes that he doesn't need to add your feelings to his list of worries, perhaps he can relax a little bit more around you, and open up a bit more.
Has your H seen anyone for his depression, or has he admitted at all to being depressed?
You're probably right not to bring up Xmas. Do you have backup plans just in case? That way you won't feel compelled to bring it up and will be able to wait for him to do so.
Let me know (on FB please :)) if you do end up taking that suggestion. Given where you're at now, I'd really recommend it. Couldn't hurt anyway!
Hope you're having a good day...
ITH
Me:34 H:36 M:5 years T: 8 years Bomb: 07/17/08 I want to be separated for 6 months--I don't know what I want the outcome to be S 07/28/08-11/08/08 Living together ~7 months D Possibly busted?!?!!!