I am sorry for your loss, Moonglow. You deserve better than you were treated.
Time will dull the pain to an extent. There are some pains that never completely go away, but their impact has been greatly dulled as you go on with life. I would say to take things one day at a time and mourn for your lost relationship.
It helps to hang out with friends or go to social situations for some people. Just keep busy until you start to feel better.