"I call up Marty Scorsese, I say, 'Marty its JH. I'm ready to get in the ring together.' He says, 'Finally,'" the 30-year-old actor recalled. "Then I say, 'Should we get DiCaprio on board?' And Marty says, 'I don't know if he can handle it. Sure he's a movie star and puts teenage girls in the seats. But we need a real actor like you.'"