Hiya Holton, I hope your OK? And I hope the chemo is working.
Are you still with him? Does he want to stop?
Personally I think you need to get your friends back and move on from him. You need to look after yourself, he will just make you worse. He should be looking after you, but I don’t know the ins and outs. The coke will always come 1st, your friend is right. I’d start thinking of yourself and get some happiness in your life and go have a brew and a nice chat with your friend. Hope you are OK ❤️