Hi, Jack
I agree - the disease and the treatment both suck. I am sorry that your finance is also having such a hard time.

Oddly enough, I think that one of the things that helped my husband the most was walking our old dog. That got him up and out of the house, with his hat to protect his neck from the sun, and let him do something normal, and make the dog happy. As Eric described above - there's all sorts of things messing with your chemistry right now. There are some things the doctors can help with, and there as some things you can help yourself with. Dogs, cats and small children are good to be around, if you can manage it, because they are non-judgemental (well, maybe that's not true of cats) and can make you smile. If you cannot have a pet yourself, many shelters have a volunteer program.

I want to wish you the best of luck with your recovery. It is terribly hard, but you still sound pretty fiesty to me. Keep fighting!