Mysts, What your going through is one of the most difficult of diagnoses and illnesses. I know I have told you that before...all of these things effect everything and everyone around us. Often times we are not able to see that when we are self destructive and in pain. I am sorry that he was not strong enough to stick by your side and support you through this. Perhaps he had an image in his head that you would magically go back to not having any sort of illness what so ever...who knows? but that isnt going to happen and you now have to concentrate on yourself and getting better.
It is okay to mourn the loss of a relationship and especially to someone who you loved and cared about so much. But if he cared and loved you the same he wouldnt of walked away so easily.... Dont blame yourself or your illness it is just a convient excuse for him. Hang in there girl, your tough and can get through this.
We are always here