Unlucky in love twenty-somethings conclude the solution to their relationship problems is to stay single, as they mingle through the bars of Wrigleyville. "The Guide to Being Single," a new book from an anonymous author, gives you twenty-five simple rules for screwing without getting screwed: You never call or text. You always go to their place. And most importantly, you never break the rules. But what if the fun of rules is breaking them?