If I lived with a depressed partner I would simply go out and find someone else, maybe for a bit on the side to start with, and I would over the next few month monitor the said bit on side's behaviours. If this new person was found to be full of life and I was enjoying myself I would leave the old one and move on. If on the other hand I was boring the shit out of the new person and driving them into the ground, I'd change my ways and go back and be a better person to the original
Depression is an illness. If that illness was cancer would you say the same thing?
Oh, you got sick, think I'll fuck someone else for a bit and then leave you...
I have the feeling that this post was intended as bait.
Seb, for what its worth, when I had that injury/condition I limped about for weeks. One day my brother and me went fishing. It was absolutely freezing and the ground was iron hard with frost.
While limping across a frozen field with ever increasing numb feet, my injured foot accidentally dropped either side of a frozen clod. I felt an almighty crack in the foot and thought I'd really messed it up.
Since my feet were numb with cold I expected to find out how bad the damage was later.
Later I found that the pain had completely disappeared.
Conclusion, it must have been a 'hooked up' ligament. Manipulation could be the answer.