Hey Andy
If you really loved her then the first thing is you don't want to try to force yourself to get over it quickly. After my ex left me it was a month before I could even look at another woman without getting depressed. But don't let yourself get stuck in mourning. Is there anything in particular you used to do before you started dating her but sort of dropped once you were in the relationship? Picking that back up might help. Or start a new hobby. To get over a negative change in your life, you should create a positive change too to keep your attention. Hey -- it might give you something interesting to talk about with the ladies too
PS I'm no PUA, don't regard anything I say as PUA type advice
I'm only commenting b/c I have experience breaking up with a serious girlfriend...