Oh stop it! Get all dolled up, go out and go sit at a bar for a few hours. Someone will start chatting you up. It will boost your confidence if nothing else and it will distract you for awhile. A rebound will do you good. I normally never recommend a rebound so I am changing all my rules here just for you but you really need to learn there is LIFE beyond him.
Your trapped right now and you need to see what else is out there. Go do it! If you don't want to go to a bar-join a group such as music, art, a sport-whatever.. just meet no people. No excuses.