With humor and insight, #1 New York Times bestseller Becky Albertalli explores the nuances of sexuality, identity, and friendship. Imogen may be hopelessly heterosexual, but she’s got the World’s Greatest Ally title locked down. And when she visits her best friend, Lili, at college who is newly- out, newly -graduated, and newly thriving, with a cool new squad of queer college friends, no one knows that Imogen’s a raging hetero—not even Lili’s best friend, Tessa. Of course, the more time Imogen spends with chaotic, freckle-faced Tessa, the more she starts to wonder if her truth was ever all that straight to begin with . . .