Heyas,
What really bums me out is that she took the whole 13 months of emotion and passion to tell you that she doesn't love you in the way you want her to. Was there EVER an earlier time she could have told you all this? Either of you could have found someone else by now. If I were in your position, I'd wait at least another 13 months before calling her, if ever.
"And it's unfair to you to keep this going the way it is."
Why was it going the way it was at all?
I hope that didn't sound cold or anything. It's just that once I learn it's not going to work out, I can't pretend it will.
At any rate, you won't feel this bad for too long, as others here have said. They say you have to kiss a lot of frogs before you find your princess. How true!