It Ends with Us is a romance novel by Colleen Hoover, published by Atria Books on August 2, 2016. The story follows florist Lily Bloom, whose abusive relationship with neurosurgeon Ryle Kincaid is compounded when her high school boyfriend Atlas Corrigan re-enters her life. It explores themes of domestic violence and emotional abuse. Based on the relationship between her mother and father, Hoover described it as "the hardest book I've ever written".