Re: His depression causing low sexdrive/or am I just not wanted?
Have you considered asking him if his depression is affecting his libido? If he is on anti-depressants, there is a very strong likelihood of that.
If you still live together, you may know whether he still masturbates or not. If his libido is truly diminished (as from medication), he won't even be masturbating. So, if you can determine whether his sex drive is gone in all areas, or just gone where you're concerned, that might be a good place to start talking about it with him.