<human>: Can you succinctly summarize the text in 1-3 sentences?

I have a great friend of mine that I've known for a while knows I have feelings for her. Unfortunately, for me, she doesn't have the same romantic feelings and she can't see us being together romantically. Gentleman know this all too well as the friend-zone. To be clear, I thought she was out of my league and I couldn't see us together but I do care for her more than a friend. I recently told her and shortly after that I tried to distance my self(not texting her to hang out and whatnot unless she texts me first). But then a few weeks ago she started getting very ill and while the prognosis is not a death sentence, it will be a life of pain and difficulty. She is worried about her career as she just graduated and how her plans for her life seem to be ruined. These last few weeks I've been there to support her, bring her food, talk with her, be a shoulder to cry/lean on and it's making it harder for me to NOT want to be with her. I'll be honest I know that if we did have a relationship, her illness will be challenging but I'm in if she is and will be there for the long haul. Part of me wants to just leave it, but I don't think I could ever forgive myself. She knows exactly how I feel and I don't want to burden her with my problems. I think I know the right thing is to be there for her and to put my feelings aside, but I feel like its tearing me apart.
<bot>: I have deep feelings for my friend, she doesn't, but she's ill and needs support. I have a hard time being in between. Any advice?