Mackler, Carolyn: - Carolyn Mackler is the acclaimed author of the YA novels The Earth, My Butt, and Other Big Round Things (A Michael L. Printz Honor Book); The Universe Is Expanding and So Am I; Infinite in Between; and Love and Other Four-Letter Words; and the middle grade novel, Best Friend Next Door. Carolyn's award-winning books have appeared on bestseller lists and been translated into more than twenty-five languages. Carolyn lives in New York City with her husband and two sons. The Wife App is her first adult novel.