Michael Douglas Reveals He and Kathleen Turner Lied About Romance For Decades

Michael Douglas is getting a 40+ year lie off his chest … admitting he romanced Kathleen Turner‘s stone while shooting a famous movie together in the 1980s.

The actor revealed the relationship in his new memoir “One Helluva Ride” … claiming he and his then-wife, Diandra Luker, were essentially separated when he went down to Mexico to shoot the 1984 smash hit “Romancing the Stone.”

During filming, Michael says he and Kathleen became close — even though she apparently wasn’t the first choice to play his love interest — and eventually “fell hard for each other and began a relationship.”

He claims their other costar Danny DeVito and director Robert Zemeckis had no idea the two were together … but he says Diandra picked up on a vibe when she and their son Cameron came down to visit him on set.

Michael says Diandra told Kathleen the pair were still together … and Kathleen backed off because she didn’t want to complicate anything. Michael says he agreed to stay married to Diandra for Cameron’s sake — and the two remained married until 2000.

Of course, “Romancing the Stone” wasn’t the only time he and Kathleen worked together … they also starred in “The Jewel of the Nile” and “The War of the Roses” — and have said for 42 years that they weren’t together.

In fact, just a few years ago, Kathleen claimed their relationship was all sexual tension and no sex … but Michael tells a different story.

Worth noting … Michael maintains a strong relationship with Kathleen — and he says he asked her for permission before telling the world.