Most Helpful Guy
I am torn on this because I agree with @lew5505 that it should come easy but at the same time if you were married I would think that you would stay and help him given that he is the love of your life. Life is a struggle, so is a relationship. Some medical struggles with such things as you mentioned are part of life. He may be pushing you away because he doesn't want you to have to deal with it, which would be a selfless thing to do and is a rare and good thing. I think it is worth trying but you may want to set a date to check your self if it is working out, like next New Year.
Most Helpful Girl
You should leave him, and be happier off with someone who actually wants you