“E. Lockhart has done it again in this twisty, inventive, philosophical and romantic story about the many ways a person can find, lose, and understand love.” —GAYLE FORMAN, #1 New York Times bestselling author of If I Stay

"My favorite books are those that are hilarious, poignant, utterly unique and brimming with realistic, loveable characters (preferably including dogs). This book doesn't just have all these elements. It has them in multiple universes. I loved it." —JACLYN MORIARTY, author of Gravity Is the Thing

“What if falling in love had infinite possibilities and multiple universes exist? A lyrical read that’s also fun as it addresses myriad truths.” —SLJ, starred review

“The story of a messy, normal life where connecting authentically with others is perilously hit-or-miss but worth the heartache for what you learn about yourself.” —Booklist, starred review

“Cleverly constructed. . . . Unfolds with surprising grace and ease.” —The Bulletin, starred review

“Lockhart takes her penchant for plot twists to a new level, with a narrative that explores the idea of the multiverse. . . . An iterative feast of ideas about art, possibility, and the creative process for readers hungry for big concepts. Others will simply luxuriate in the storytelling.” —Publishers Weekly

“What begins as a typical YA romance becomes a thoughtful exploration of expectations. A subversive exploration of the diverging pathways of the human heart.” —Kirkus Reviews

"An offbeat, philosophical love story for those who enjoy pondering the mysteries of the universe or the heart." —The Horn Book

“This surprising and charming YA novel explores one teenager’s existential angst about relationships-romantic, platonic, family and canine.” —Shelf Awareness

“Her prose and storytelling ability are unparalleled in YA. . . . I want to read every story she decides to tell.” —BookPage