This post is pretty old, so I hope things are getting better for you already! I just wanted to share something as well. Maybe that would be helpful.

About half a year ago I found a lump in my left breast. At that point we didn't know yet if it was simply a fibroadenoma or something way more serious. I asked my boyfriend what if I had cancer, would he leave me or stay and help me fight it. His answer way pretty simple. If you love someone, you can cope with almost anything. But if an ill person starts to fall into depression, blame everyone around, cry all the time, complain too much or show other negative behavior - that's what makes it unbearable.

Everything turned out fine for me, even though I had to overcome a small surgery. Unfortunately due to a huge amount of stress I was acting way too weird and it played a huge role in our relationship crisis, which - luckily - we happened to overcome.

So I was wondering... maybe the way you are expressing your emotions is too much for your guy? I'm not defending him, because I believe that there are always two sides of a conflict to have a responsibility. But anyway - crying on the floor in front of your partner is not a very wise thing to do. Surely, everything happens sometimes, but not on a regular basis. Especially, when it's not because of pain, but due to some inner personal reasons, sometimes unexplainable and unclear to the other person and thus often seen as some kind of manipulation or even attack. His rather disappointing words might not really mean what they seem too, and probably he's not frustrated by your inability to go out with him, but by your negative emotions, which might be just overwhelming for him. No one needs a relationship which brings only bad, negative stuff with it. Even if/when you find someone else (someone more compatible with you or maybe more understanding), the best thing to do is not to let negative emotions evolve because of your illness. People sometimes deal with much more serious stuff and yet stay positive and optimistic. That's the best thing for both you and your relationships.

I hate saying these things, because I know how easily offended a person in your situation can be and how important and sensitive this topic is. I wish you all the best and really hope everything improves very soon (if not already)