Sucks for you, hon.
Some advice, though....
(I happen to be an expert on finding things to do)
1) Go out to a singles bar or club for the night
2)If you are a woman, go get a manicure or a new hair style
3) Join a gym. By doing this you'll accomplish two things: get in great shape and meet tons of people (there's never a shortage of people at the local gyms)
4) Take a nap or a long drive in the country. It'll help clear your mind of things.
5) Go out and have fun!

Best of luck to you in this.