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. Auto: my girlfriend.
Zoffee: Auto's husband. Cue: Zoffee's boyfriend. Bookie: Cue's wife.
"Love is not breathlessness, it is not excitement, it is not the promulgation of promises of eternal passion. That is just being "in love" which any of us can convince ourselves we are. Love itself is what is left over when being in love has burned away, and this is both an art and a fortunate accident. " -- Louis de Bernières