Dating other people definitely helps. Blogging about it aided me a bit, but I found that I started to wallow and it made it worse. I got caught up in the emotional angst of it all, reliving every moment and not ever moving on.
Distraction for me is the best way. I'm not sure if it is an ENFP thing, but the emotions are SO crazy at times that I can't take them all on at once -- they are connected to nearly everything! I find that if I keep constant distractions long enough, I can deal with the grief a little at a time. Some have said this is unhealthy because it is avoiding the pain, but the fact is, I can't escape it anyway. So, it helps to water it down as much as possible and grieve in doses.
It sucks that he cut you off, but it's good too because now it's over. Hard to accept that, I'm sure, but great cause it is out of your control. You have no choice but to let it go. The ship has sailed. The bridge has been burned.
We are so relational and I think that the only way to get over someone is to have a relationship fill that void (whether it be a new lover or even a good friend). As much as humanly possible, I would stop dwelling and start dating.