Love/Depression

Excuse my english.

Well, me & my boyfriend were so in love with each other, we were laughing all the time, having good times and bad times, but since he got into a depression, his behavior changed, he says that he loves me but he can't do anything for me now, he's upset and need to think about his future in his job, and with his family etc.

I don't have a problem with that, but I just can't feel okay when his behavior isn't the same, when he doesn't talk a lot, & he doesn't want to move on, he doesn't eat, doesn't sleep well, doesn't laugh, all he says is: I love you.

I dont know how to help him to go through that depression... I am not good at this ..