Blake Lively says producing and starring in “ It Ends With Us ,” Sony Pictures’ film adaptation of Colleen Hoover’s best-selling romance novel, took just about everything she had to give. “It was so important to me to work off camera,” Lively, who plays Lily Bloom, told Variety at the film’s New York premiere on Tuesday. “The work I did as a producer was far more all-consuming than anything I did playing Lily.

I just did it all. There’s nothing I didn’t touch on this film,” she said. Like its source material, “It Ends With Us” follows Bloom, who falls in love with an irresistible neurosurgeon, Ryle Kincaid, after several fateful meet-cutes.

When Ryle’s violent tendencies emerge, Lily re-experiences the cycle of domestic abuse which defined her parent’s relationship and finds the strength to break free. In 2022, thanks to “BookTok,” the literature-side of TikTok which propels popular novels to stardom like influencers, Hoover’s novel sold four million copies and became a smash hit. “It took my love, it took my passion, it took my time, it took my fortitude and dedication, and it took my sleep,” Lively continued about working on the film.

“Because of that, I’ve never had so much authorship in my life. I walk into this premiere with such pride for what we did. I can walk away for the first time saying, ‘I’ve put everything I have into this, and I’m proud of it.

’ It’s one of the greatest gifts of my life, and definitely my car.