It Ends with Us is a bestselling contemporary romance novel by Colleen Hoover, published by Atria Books (an imprint of Simon & Schuster). The story follows Lily Bloom, a resilient young woman who moves to Boston and falls for neurosurgeon Ryle Kincaid — a man with a dark past and strong convictions against relationships. Just as their romance intensifies, Lily's first love, Atlas Corrigan, unexpectedly re-enters her life, forcing her to confront difficult truths about the cycle of abuse and the courage it takes to break free from it.

First published in 2016, the novel became a cultural phenomenon, reaching #1 on the New York Times bestseller list and selling over 2.7 million copies in 2022 alone. It is celebrated for its honest and compassionate portrayal of domestic violence and emotional complexity. A major film adaptation was released in August 2024, starring Blake Lively and directed by Justin Baldoni, which drove renewed interest in the book worldwide.