“I think there were a lot of things that the script asked that I have never seen her do, so I was trying to figure out how we were going to get there,” Aronofsky, 48, explained in an interview with Vulture. “And during the rehearsals, she was very, very relaxed. She was present… I really didn’t get to know the character until we started shooting, and she showed up."
"During the big climax of the movie…She really went there," he added. "The producers were freaking out. We had to sort of calm it down and then go for it again. And the thing is, there’s so much ability there that somehow she can summon it again and again."
Lawrence and Aronofsky began dating after they wrapped the movie last fall. The actress recently opened up for the first time about her relationship with the director, telling the September issue of Voguethat she "had energy for him."
"I don't know how he felt about me," she added. "I’ve been in relationships before where I am just confused. And I’m never confused with him.”
The couple was first spotted kissing in New York City last November. See more of their PDA-filled night in the video below.