Blake Lively is entering the world of Colleen Hoover. The actress will star in the movie adaptation of the best-selling romance novel It Ends with Us, E! News confirms. She'll act alongside Jane the Virgin's Justin Baldoni, who is also directing the film. As for the behind-the-scenes team, both actors and the author will have creative say as executive producers on It Ends with Us. Blake and Justin are expected to play redheaded florist Lily Bloom and doctor Ryle Kincaid, respectively, with Colleen announcing earlier in the day that she was preparing to reveal those characters' castings. The actor playing Lily's first love Atlas has not been revealed. "Lily hasn't always had it easy, but that's never stopped her from working hard for the life she wants," reads the book synopsis. This isn't Blake's first time bringing a complicated book character to life. She recently starred as Emily in A Simple Favour (based on the Darcey Bell novel) and, of course, as Serena in Gossip Girl (based on the book series by Cecily von Ziegesar) from 2007 to 2012.