She told me she feels awful for screwing me over and she is getting her 'just desserts'.
I call b.s. It's because you are now her shoulder to cry on. You are not her girlfriend, though, or her gay friend so I'd express that you aren't interested in her dating. If she doesn't think you are interested in her, then perhaps you should say so and see what she says. What have you got to lose? Not a whole lot. What has she got to lose? Well, if you've been working to be the best guy possible, then she's got a lot to lose.
You cannot be lonely if you like the person you're alone with. Dr. Wayne Dyer