The first trailer for 'It Ends With Us' is here and it's soundtracked by a song from star Blake Lively's good friend, Taylor Swift. The film is an adaptation of Colleen Hoover's novel of the same name. It sees Lively play Lily Bloom, a woman who overcomes a traumatic childhood to embark on a new chapter in Boston, where she chases her lifelong dream of opening her own business, a flower shop. Along the way, she meets charming neurosurgeon Ryle Kincaid (played by Justin Baldoni), whom she sparks an intense connection with.