Focus on doing good for yourself. Not only will you feel better, you will become more desireable.
Eat clean / healthy. Maybe try out some yummy vegetarian/vegan recipes
Start working out - endorphin rush AND improved body image ;D
Start a new book to read. And then once you finish it, start another one.
All of these things keep you busy and focused on bettering yourself, rather than on the fact that you don't currently have a partner. And all the while make you more desireable.
Work on becoming the person that you yourself would want to be with.