Koko, I am sorry to hear of your struggles. Another thing that leapt out at me with your bit about knowing her for just a couple of weeks.
You've had no time to get to know her properly. You do not know all her faults, her bad habits. Who's to say that had you dated for another couple of months, or a year or so, that those things would've driven you mad? You may have even broken it up yourself?! Who knows. And that's the problem, you didn't know each other well enough. Sorry to say, but I think you've built her up as a kind of superwoman, and believe me, nobody is like this, ever. So the problem is that no woman will ever live up to the expectations of a superwoman because its not possible.

I know that our feelings can be irrational where the heart is concerned. I'd try so very hard to try and get over her.. and allow someone else into your life - but wipe the slate clean in your head and let her be her own person. She may just wow you! Good luck & hugs.