She sounds really confused and it's really unfair of her to put you in this position after so long. Since I don't know her personally I can't say for sure if she really meant all the things she said, but it's not impossible that she really did mean every word of it but at the same time was conflicted because she really didn't want a relationship. That is how I would look at it, however if this was turned around so that it was the guy that told me all those nice things and then all of a sudden didn't want a relationship anymore, there would be no doubt in my mind that he made it all up. And I guess girls are just as capable of lying about the same kind of things guys do. That is to be left up to your own judgement, however, regardless of her feelings, she is treating you very unfairly. If she really never wanted a relationship, that is something she should have drawn to your attention 8 months ago, not now. You deserve more respect than that from a relationship, she was obviously only thinking about what she wanted and how she felt at the time and not taking into consideration your thoughts and feelings.
I know you are totally confused, I mean this is the girl you loved and most likely thought you knew everything about and suddenly she comes out and tells you that she doesn't want a relationship and has never been happy with you. That really has to hurt, but the sooner you get this over with the better off you will be. I have recently gotten out of a horrible pretty much abusive relationship that I was in for over a year, and it's really hard, but at the same time I feel so much better about myself and my life right now and even though I miss him and I'm not even close to being over him, I know that I'm so much better off and eventually I'll be totaly over it and find someone who will treat me right. That's what you need. It may not seem like it, but there are plenty of other people out there that you could be happy with (happier with, actually). Don't let her walk all over you... most likely if she does it once she will do it again. You deserve much better than that.