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Michael Douglas is opening up about the "art" of filming sex scenes, revealing that the intimate moments require extensive communication and trust between actors.

During a recent appearance on "Happy, Sad, Confused" with Josh Horowitz, the 82-year-old actor reflected on filming sex scenes earlier in his career, before intimacy coordinators became commonplace on movie sets.

"There’s an art to sex scenes in films. It’s not easy to do things like shadowing people when you’re on top and this and that," Douglas said.

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Michael Douglas gets candid about the "art" of filming sex scenes. (Getty Images)

"But the big thing with sex scenes is trust," he continued. "And as long as the lady is trusting me — obviously I trust her — it’s like a dance.…