A relationship guide for women called He's Just Not That into You was the surprise nonfiction bestseller of the fall, and now its author, comedian Greg Behrendt, has signed for another book, this time for Broadway. The house's Ann Campbell signed him for It's Called a Break-Up Because It's Broken, designed to help women recover from such traumatic occasions and do better next time, and Behrendt is writing it with his wife, Amira Ruotolo-Behrendt, who has her own memories of such unhappy occasions. Behrendt was an adviser for Sex and the City and published his first book with S&S; Campbell signed this one for North American rights, along with serial, book club and e-book, with agent Andrea Barzvi at ICM. It will be a lead title next fall.