This is David and Rachel's fifth collaboration, following Nick and Norah's Infinite Playlist, Naomi and Ely's No Kiss List, Dash and Lily's Book of Dares and The Twelve Days of Dash and Lily. Rachel Cohn is the bestselling, award-winning author of many books, including Gingerbread and Cupcake . She lives in Los Angeles with two very cool cats named McNulty and Bunk. David Levithan is the author of many brilliant and bestselling book, including Boy Meets Boy, Every Day and The Lover's Dictionary, and Will Grayson, Will Grayson co-authored with John Green.