Dont know what to do about a sick girlfriend...

End it man. It's over. You know it is. Anytime you're having thoughts about ending a relationship, it's over already anyhow.

I know it's hard to break off a long-term relationship when there's still some hope or good aspects of it. I've been there, but being a pussy isn't going to help either of you.

You gotta just, in the words of our very own Titus, grab your sack and do it.