"I had lost my mind," Robbie told Grazia, describing the deterioration of her mental health. "I genuinely thought [Sebastian Stan and I] were these people and we were off the set, running down the street screaming at each other and the cameras are running after us," Robbie said. She sprinted down the street and Stan went after her; when she saw him approaching, Robbie socked him right in the head.
Stan played Jeff Gillooly, Harding's ex-husband. Robbie admitted that the "abusive relationship" depicted between herself and Stan emotionally traumatized her.