Man doesn't want sex, has no work, feels bad

My partner is struggling with his business and can't find other work... He's also trying to lose weight...

So we are on a tight budget and he's really demoralised and stressed out...

I'm doing my best to support him and he says "just be yourself". Problem is he doesn't want sex. But he's really sweet and cuddly and said it's nothing to do with me....

Have any of you dealt with different sex drives or being with a man with low libido or perhaps a partner struggling to find work and how you deal with it...