Mixed Feelings..
I've been with my GF for 17 months, in the beginning I was crazy about her, I just wanted her, then I proposed her, after 2 months she accepted me, then I was very happy, then in between we had many fights, but I was always the one saying sorry and apologizing, whenever there was a fight she always gave a crap to it, leaving it all on me to say sorry as I was really crazy about her, but recently things happened to change between us, we had gaps of one one weeks, then one day i decided to not go back to her because i was so pissed off, after one week she came saying sorry, i was not going to forgive her but my friend explained me and we got back, from that time I've never been as attached as I was before, till now I have a feeling that I don't like her, and I don't want to live with her, i just don't have any feelings for her, and now she is more than crazy for me, she wants me at any cost, but I told her that all my feelings are gone, and she just keeps crying all the time that she just needs me, she can't live without me, she will die..
And I know that SHE TRUELY LOVES ME MORE THAN ANYTHING, but I don't feel like being with her anymore, i just don't have any feelings for her, and I've told her about this many times, and I've asked her to give me a month break so I can sort out that what I have to do, whether I want to be with her or not, but she is crying dying saying that live with me or leave, so I said that if you can't cooperate with me then I'm leaving you, and I left her....

I think I can't live with her because I don't love her BUT I don't really want to hurt her, I just cant see her crying

What should I do???
She's a very very very nice girl now, she loves me more than anything, i know this...
Please anyone suggest me what to do???

I know I can't find a better loving girl, but for the girl who loves me like anything I've no feelings, please tell me??