Yes I know what you mean - there is a sense of relief to know that others are having these wierd symptoms when depressed, and it's not that we want anyone else to suffer, but whatever we are going through in life, it's a relief to know that others are also affected.
Christmas is going to be very difficult for your bf because I think the whole thing about Christmas is that emotions (good or bad) are heightened with al this stuff about happy families. I reckon it's only like that on the TV ads!! Well not quite, but you know what I mean. January is a very busy time for organisations like Relate, with couples wanting to split up!
Yes you must continue to re-assure him you will not leave him but to be honest when we are so despairing, we can't ever believe that anything will get better (that's another damn trick A & D plays on us) If we break a leg, we know that it will take a few weeks but it will eventually mend. Brain disorder is not like that unfortunately.
Many people worry about "things going on their medical records" and this in a sense is understandable but such a great pity, because it means that the stigma of mental illness is alive and well! Is he off work at the moment? I'd be very surprised by what you say that he can manage a job.
Do you know his daily "routine" which is quite important even when we are rock bottom. When I am like this I don't want to get out of bed (and don't have to because I am retired) somehow the pain is less in bed but you do need to shower and clean teeth etc. I am fortunate that I have a brilliant close friend who I can ring on those days and she "stays with me" on the phone while i get up and "make" the journey to the bathroom! I promise myself I can go back if I need to (it's usually about mid day when I get up) once up I sort of take the day in chunks, I cry a lot and then lap top a bit and freak out if the door knocks or the phone rings, but DP always handles things.
I get a fair bit better in the evening and can enjoy a few hours of peace and the relief is wonderful.
I realise it is tricky for you because you haven't known him long, and don't want to seem too "pushy" but maybe you could gently ask about his day and is there any time in the day worse than another etc. Mornings are hell for me on bad days. Is there a way you could gently ask about this - I think if he knows you have some understanding of what he is going through it may be easier for him to open up a little. How long ago were these bereavements by the way? Does he have anyone in RL, close friend/relative who he trusts, and who could visit him. Doesn't sound like it. It is very fortunate that you are the sort of woman who is compassionate and wants to help him.
Don't feel you have to answer the questions I pose - it all just comes out of my finger tips!!