Entertainment Movies Angelina Jolie Pitt on Filming Fight Scenes with Brad Pitt in 'By the Sea' : 'I Better Understand His Frustrations' "Normally if Brad sees me cry, it ends by his taking care of me. But here, in the the film he had to stay angry," Angelina Jolie Pitt explained By Jodi Guglielmi Jodi Guglielmi Instagram Twitter Writer-Reporter, PEOPLE People Editorial Guidelines Published on December 4, 2015 11:45 AM Share Tweet Pin Email Photo: AdMedia/Splash News Online When Brad Pitt and Angelina Jolie Pitt began filming By the Sea, they knew they were going to discover new things about their relationship. One big surprise? Jolie Pitt, who directed the film, admits it was especially eye-opening to see how they both react in the aftermath of a blowout. “Brad has never seen what I’m like when he’s left me after one of our fights,” she told French Elle for its December issue. “Sometimes I’m strong. But as soon as he leaves the room, I melt into tears.” “With this film, he sees it,” she added. “And I see into his private moments.” Jolie Pitt, 40, said that seeing how the other copes after a fight helped them understand one another better in their real-life relationship. “I filmed it and I discovered his expressions,” she explained. “So I better understand his frustrations over certain aspects in me.” Set in 1970s France, By the Sea tells the story of a struggling marriage between Vanessa (Jolie Pitt), a former dancer, and her writer husband, Roland (Pitt). RELATED: Brad Pitt and Angelina Jolie’s Most Glamorous Moments While the couple in the film is not based on their real relationship, Jolie Pitt said it was still hard to separate their real feelings from the ones they were supposed to portray on screen. “The most difficult scenes were the most drawn-out fights: normally if Brad sees me cry, it ends by his taking care of me. But here, in the the film he had to stay angry, and I couldn’t take it personally,” she said. “It was so strange and interesting.” By the Sea is in theaters now.