I honestly don't believe there's a "method" to getting over someone. Physically you have to break the neuron pathways in your brain and make new connections overpassing the old ones, but mentally, you just do. I think everyone does whatever it takes to keep them above clinically depressed or insane until that pivotal moment in which they just snap and get over someone, and yes, I believe it's a solitary moment. One that takes forever to get there, though.
But, let's see. My last break-up (in a long line of really weird break-ups that I will someday write about because they're just that damn weird/comical/whatever) was with a guy much older than myself. He was everything I could want in a guy - physically attractive but not crazily so, emotionally stable, a gamer, sarcastic - so of course I was smitten. After a few great months, I don't hear from him for a few days (which wasn't a huge stretch because he had problems with a broken screen on a cell phone). Then one day (after which I was getting pissed at his absence) he sends me a text message saying it's not working out. No reason whatsoever (so I assume he's banging someone else). I'd like to point out I was 21 at the time and he was 26. *sigh*
I just told myself that yeah, I was sad he was gone, but that would pass. I reminded myself of all the little inklings that told me it wouldn't work out, and then the way he broke up with me spoke volumes for his idea of the relationship and his own self-worth. One day I actually believed what I said, and that was that.