There is no point in continuing this relationship if you don't care for her anymore. It would be CRUEL and you'd be leading her on. Why don't you just man up and tell her it's over? What's the point of continuing to go over there when you don't care for her?

And isn't "hate" kind of a strong word? Do you really HATE her?
Be gentle with her when you "dump" her, and just tell her that you think it would be better for both of you if you saw other people. Tell her that you think that SHE was right when SHE dumped YOU. Just tell her that a relationship isn't what you need right now, and you need to get your head together -- or SOMETHING like that. LOL But just be kind to her, okay? You can figure out something to say.
Best of luck. God bless. Hugs, Lee