Even though my personal wealth is next to zero since the divorce, I'd bet all I've got (save my D) that he's depressed. Depression runs in my family, so I'm on anti-depressants myself and I felt a similar "lack of passion for anything" prior to seeing my doctor about it.
Can you call his IC and have a chat? They can't reveal any information, but they can and will listen and take notes on what you tell them. It is often used in their therapy w/the patients and they are able to make it seem as if the patient has oome up w/these discoveries on their own.
It couldn't hurt, even if you've done it before, to schedule some time to either call or go in to see the IC and give them the update of what H has told you, how he acts w/you and your concerns.
