It Ends With Us by Colleen Hoover

It Ends with Us is a bestselling romance novel by Colleen Hoover about Lily Bloom, a florist who falls for neurosurgeon Ryle Kincaid, but their relationship becomes complicated when her first love, Atlas Corrigan, re-enters her life, forcing her to confront her past and the cycle of abuse she witnessed growing up. The book, published in 2016, explores themes of love, abuse, and breaking generational patterns, and it has a sequel, It Starts with Us, which tells the story from Atlas's perspective.