Some relationships end with both sides realizing maybe you are both better off being friends, others well can be a bit messy. One midwestern pet rescue is offering you the chance to show your former #1 a little #2 this Valentine's Day. The Sioux Falls Area Animal Humane Society is offering up a unique fundraiser that involves your ex's name and a litter box. The shelter is offering up a little 'revenge' for that crappy ex of yours. For a small donation, they will write your ex's name on the bottom of a litter box and the humane society cats will take care of the rest.