'The best book about adultery since Madame Bovary.' --Tony Tulathimutte, author of Rejection A New Yorker, NPR, ELLE, and Esquire Best Book of the Year A hilariously acerbic sliding doors novel about a chance meeting between two young parents, both happily married (just not to each other) that sparks a will-they-won't-they romance. When Cora meets Sam at a baby group in their small town, the chemistry between them is undeniable. Both are happily married young parents with two kids, and neither sees themselves as the type to engage in an affair. Yet their connection grows stronger, and as their lives continue to intertwine, the romantic tension between them becomes all-consuming--until their worlds unravel into two parallel timelines. In one, they pursue their feelings. In the other, they resist. As reality splits, the everyday details of Cora's life--her depressing marketing job, her daughter's new fascination with the afterlife, her husband's obsession with podcasts about the history