The best plan is try to have as little contact or no contact with this person as possible.

Figure out why what he does was able to hurt you emotionally and try to build yourself up in those areas.

Realize he will just do the same thing to this person he is with now eventualy so don't make it about you vs. her, her, or you.

Realize He probably is just the type of person that gets off on hurting people so you are lucky that his turn at you is done.

Accept that being a bummed out is natural but treat it like anything else you would be depressed about; get a good sleep routine, eat healthier, do mild exercise outside in the day light even if you have to have a walking breakfast or lunch, and have a "Be Pretty" visit at least once a week to fix your hair, or nails, or buy flowers, or work out with the girls. Sometimes you have to fake it until you make it.

Last but not least help a woman who has it worse off than yourself. Volunteer at a shelter, hospital, or nurseing home, help build a Habitat house, teach a little girl how to say the Brownie promise, tutor at the Boys&Girls club, sew in a Newborns in Need group.

Read something that will improve your skills.

Write lots of posts, flirt with the nice folks at Mingle and before you know it you will have so much fun you wonder why it took you so long to Join in our Playpen. Welcome! Good Luck!