Blake Lively in "It Ends With Us."Sony Pictures EntertainmentThe book sequel to "It Ends With Us" continues the story of Lily and Atlas's relationship.Colleen Hoover wrote "It Starts With Us" in 2022 after she was "inundated with requests" from fans.Here's what happens in the book and what's been said about a potential big-screen sequel.Despite what the title may suggest, "It Ends With Us" is just the first chapter in Colleen Hoover's viral BookTok series.The adaptation of Colleen Hoover's 2016 best-selling novel starring Blake Lively has got the internet talking for more than one reason — and red-carpet comments from director-star Justin Baldoni have already raised the possibility of a sequel to the film."I think there are better people for that one," Baldoni told Entertainment Tonight at the film's New York premiere when asked about the potential for a sequel."I think Blake Lively's ready to direct.