Colleen Hoover (born Margaret Colleen Fennell; December 11, 1979) is an American author who primarily writes novels in the romance and young adult fiction genres. She is best known for her 2016 romance novel, It Ends with Us. Many of her works were self-published, before being picked up by a publishing house. Hoover has sold approximately 20 million books, as of October 2022. She was named one of the 100 most influential people in the world by Time magazine in 2023.