I was with someone for 13 months, then she pretty much threw it back in my face. Well, fuck it. Don't regret the time you spent together. Never regret anything. Regret is the little voice that chews away inside you eating away at your happiness piece by piece until that is all you focus on and you can no longer be happy.
Even though you can't stand him now, just remember that you had good times together. It's worse if you think that all that time is wasted, it makes you feel guilty and feel worse because you make yourself out to feel stupid.
It's in the past. It'll hurt now, but you'll move on to better and brighter things. You'll meet someone new soon, maybe you won't. It will happen. Enjoy the single life. Spoil yourself. Do everything you want to do - you have no more obligations and nothing that ties you don't. Go out with the girls. Have fun. Have a fling. Get a friend with benefits. Enjoy yourself - you don't need that dickhead anyway.
Feel free to PM me or contact me on AIM if you want to share your thoughts. I'm pretty good to talk to, and I can give a point of view from the other side of the fence
D.