You are not alone, my friend. My girlfriend of 2 years and 4 months broke up with me on Sunday b/c she didn't love me anymore. I am devastated. It seems like most girls don't understand what a few words can do to a man. We are not made out of stone.
We can both get through this and move on. They want us to just sit and smile and pretend nothing is wrong. That's why, I believe, in most cases it's impossible to almost see them again.
Best thing to do is not beat yourself up over her. Keep moving. BE AS BUSY AS HELL!!!!!! Taking up a new hobby (running) has helped me quite a bit.