I'm in a similar situation with a guy, I keep talking to him and he says he wants to be friends with me but he knows I fancy him and he still keeps in touch. I would have thought he would be fed up with me and it is like an addiction. I meant to stop talking to him yesterday but he texted me to ask how I was so I replied. I can't stop speaking to him, and he seems to care. But he doesn't want a relationship. He might be fine with not speaking to me but it would ruin me. I can't stay away. He's not doing it for his ego, though. He is a nice person but he does seem to be lying a bit about some things.
I think he is being cruel to be kind. But it's not right to turn everything on me and make me out to be almost a predator. He suspected how I felt before we met. He certainly responded voluntarily so he is a bit dishonest there. I have told him to delete me if he wants but he hasn't.

It sounds like this girl has been honest, she talks to other guys. Is she interested in them, you say she's not interested in you and maybe its the same with them. Having a male friend doesn't mean you fancy them. It depends if she has been honest with them or not.

If I've picked you up wrong and she has expressed interest, then sorry. It sounded like you said she wouldn't date you because you have a mental illness, or is it her that has the illness? It's a bit hypocritical to not date you if you have an illness when she has one too. Or do you mean she won't date because of her mental illness?

She seems to have been honest. A bit like the guy I know. I'm not feeding his ego, though. He finds me annoying and I think he's just checking I'm ok. In your case it's best to stop speaking to her of you're just feeding her ego. You know it'll never be anything more than friends and if you can't handle that you need to go to rehab. I wish I could do the same. You could unfollow her and she wouldn't know you had done it (on Facebook), that's what I did. Remember that she has problems and maybe needs this ego feeding to boost her self esteem. Which is why I only unfollowed this guy, and I couldn't unfriend him as I don't want to lose him, if he does it I would understand but he knows I'm vulnerable too, although I've told him to if he wants. Really you should be direct with her and say that you know she isn't interested in you and you feel used, and that if she should delete you as you have an unhealthy addiction to her. If she cares and thinks you're strong enough she'll do it. She might get someone to keep an eye on you, but she would if she cared.

Good luck. I couldn't go cold turkey. I hope you can..