Aw bummer. Yeah, it's perfectly understandable to feel disappointed in your position.
"How" to get over him is different for everyone. I'm often pretty good at basically flicking a switch in my head and just "deciding" not to let something bother me any more, and then it doesn't. Of course, that only works with things that really are no big deal. I can't flick off a switch that relates to an ongoing "problem" in a relationship or anything... That would be denial.
Some people get over these things by distraction -- go on a date with someone new. Redirect your attentions.
Gralson: my husband (works out of town).
Auto: my girlfriend (lives with her husband Zoffee).
The most dangerous phrase in the English language is "we've always done it this way."