Michael Douglas now says he fell hard for Jeanne Tripplehorn on the “Basic Instinct” set and was ready to leave his wife, years after denying other Hollywood romance rumors.

At 82, the actor is rewriting his own off-screen story. In his memoir “One Helluva Ride,” Douglas admits he had an on-set affair with co-star Jeanne Tripplehorn while filming the 1992 thriller “Basic Instinct,” and that he was prepared to end his marriage over it.

Fox News Digital reported the disclosures, which also include a second long-denied relationship with Kathleen Turner during 1984’s “Romancing the Stone.”

For audiences who watched the ice-pick noir, the twist lands differently than the old tabloid script. Many people at the time figured Douglas’s real-life spark was with on-screen partner Sharon Stone, the film’s crime novelist and prime suspect. Douglas says the affair was with Tripplehorn, who played police psychologist Dr. Beth Garner.

He calls Tripplehorn the woman he almost chose

Douglas does not soft-pedal the intensity. He describes a nearly 20-year age gap and a attachment that outlasted the day’s call sheet.

Page Six highlighted his memoir language on the fling that ran through production.

"The truth is, I fell very hard for Jeanne despite our nearly 20-year age difference,"

He went further on what he was willing to blow up at home.

"In fact, I was ready to officially leave my wife for Jeanne. I was crazy about her."

After filming, he writes, they went separate ways. He still frames her in warm terms.

"But I will always think of her as an amazing actress and a truly terrific woman that I was very fortunate to spend time with,"

Secret pairings kept quiet for years have a way of surfacing when the memoir checks clear, a pattern familiar well beyond studio lots and high-profile admitted relationships in public life.

Turner affair stayed buried more than 40 years

The Tripplehorn chapters are only half the confession. Douglas also writes that he and Kathleen Turner “fell hard for each other and began a relationship” during “Romancing the Stone.”

People obtained memoir excerpt material on that earlier bond. Douglas says it was not a casual fling. He ties it to close quarters, deadline pressure, mutual respect, and attraction, and says he was “knocked sideways” by Turner “like every other guy in the world at the time.”

They hid it from the public and from other cast and crew, he documents, sneaking into each other’s rooms after filming. He and first wife Diandra Luker were still technically married then, though he describes them as separated and living separate lives when he left to shoot the adventure film.

He says they lied about the Turner relationship to protect Luker and their son, Cameron. The cover story held for more than four decades, including later years when Douglas and Turner reunited on “The Kominsky Method.”

Public figures who bury private entanglements often count on time and silence; voters and viewers only see the file when someone finally opens it, much as other tangled personal ties have shown when records and admissions catch up.

A set visit ended the Turner chapter

The break, in Douglas’s telling, came when Luker visited the “Romancing the Stone” set with Cameron and made clear to Turner that she and Douglas were still married. The relationship ended there.

Luker filed for divorce in 1995. The split was finalized in 2000 after 23 years of marriage. That same year, in November 2000, Douglas married Catherine Zeta-Jones. The couple has two children, son Dylan, 26, and daughter Carys, 23.

None of the women named, Tripplehorn, Turner, Luker, or Stone, offer comment in the Fox News account. The record, for now, is Douglas’s memoir voice against decades of earlier denials.

Hollywood has long sold chemistry on screen while treating marriage vows as optional fine print. Douglas’s book puts the bill on the table in his own words: two productions, two co-stars, a marriage he says he was ready to exit, and a second romance he spent more than 40 years denying.

Readers can weigh the candor against the calendar. The workdays ended in 1984 and 1992. The full admission waited until a late-career book.

Private choices still carry public receipts when famous people finally put them in print, and marriage is not a scene you get to reshoot without cost.