Did it ever occur to you that you were not the reason your relationship went south? That maybe he was a dirtbag and you got played? You emailed 2 months ago, and agin recently... now sorry to say it, but isn't that like way too fast for this guy to start doing the "I'm getting married dance", unless he was seeing you both at the same time. You aren't unhappy that he moved on, you are unhappy that he left you feeling like a victim.
No one is happy in a break up, but especially the one who was left feeling victimized. Make a personal rule and stick to it from now on, when it is over, IT IS OVER! No more emails, no late night calls, nothing--he is about as useful to your future as a busted birthday balloon! Stop looking at yourself as the victim here, and start acting like what you are by birthright--a powerful and wonderful woman! So one guy didn't work out... you've probably heard this before, but there are a million more out there and contrary to popular belief, the good ones are not all taken or gay!!! Burn that bridge child, get back in the game and find the one you really are meant to be with!