A June 5 Arts article incorrectly said that Natalie Wood won an Oscar for "Splendor in the Grass." She received an Academy Award nomination for the 1961 movie but did not win the award for best actress. (Published 6/9/2005)

What really happened behind the scenes? The tabloids have lunged for every speck of evidence that Brad Pitt and Jennifer Aniston's relationship may have been undone by the pairing of Pitt with Angelina Jolie in the romance-action flick, "Mr. and Mrs. Smith," which opens this week. If the rumors are true, Brad and Jen's is far from the first coupling to be unraveled by a dalliance that began on the set. (It's not even the first credited to Ms. Jolie.) Some notable trailer-side trysts:

To Have and Have Not (1944)

The plot: The captain of a boat-for-hire grudgingly agrees to transport a French resistance fighter while wooing a sultry lounge singer.

The plot thickens: Humphrey Bogart had a legendary Hollywood love affair with co-star Lauren Bacall -- but first he had to dump his inconvenient third wife.

Stromboli (1950)

The plot: A young woman marries a fisherman in order to escape from a prison camp but finds life on his home island just as confining.

The plot thickens: Ingrid Bergman's husband, Peter Lindstrom, refused her a divorce (she eventually got one in Mexico) after she fell for director Roberto Rossellini and became pregnant. Bergman was drummed out of Hollywood and called "a powerful influence for evil" on Capitol Hill.

Porgy & Bess (1959)

The plot: The legendary Gershwin opera follows Bess, a woman with a bad reputation, as she tries to break free of her violent lover Crown. Only Porgy will take her in.

The plot thickens: Both Sidney Poitier and Diahann Carroll were wearing gold bands when they started their nine-year affair. His guilt, his 2000 autobiography said, was something "11 years of psychotherapy couldn't cure."

Splendor in the Grass (1961)

The plot: A young couple growing up in 1920s Kansas struggle with repressive mores.

The plot thickens: Natalie Wood won an Oscar while dallying both on- and off-screen with Warren Beatty. She divorced Robert Wagner -- only to remarry him a decade later.

Cleopatra (1963)

The plot: The story of the legendary queen of Egypt, who seduced both Julius Caesar and Marc Antony.

The plot thickens: Director Joseph Mankiewicz said working with Elizabeth Taylor and Richard Burton was "like being locked in a cage with two tigers." Liz left Eddie Fisher and was denounced by both Congress and the Vatican (which accused her of "erotic vagrancy").

Terminator 2: Judgment Day (1991)

The plot: From a future ruled by machines, a shape-shifting cyborg is sent back to kill a human resistance fighter before he can grow up -- but a formidable protector is sent, as well.

The plot thickens: Director James Cameron left his wife, director Kathryn Bigelow, for the super-buff arms of Linda Hamilton. After an on-and-off affair, the couple married six years later.

Titanic (1997)

The plot: Romance blooms as a young socialite and a poor artist meet on the doomed ocean liner.

The plot thickens: This time Hamilton was the odd woman out, as Cameron turned to actress Suzy Amis. Her 17 months of marriage won Hamilton one of the most lucrative settlements in California history.

Pushing Tin (1999)

The plot: Two New York air traffic controllers' competition at work spills over into adultery.

The plot thickens: "I left home to work on a movie, and while I was away, my boyfriend got married," summed up Laura Dern. The boyfriend? Billy Bob Thornton, whose intense marriage to co-star Angelina Jolie (they wore vials of each other's blood) followed.

Proof of Life (2000)

The plot: After her husband is kidnapped by rebels, a woman living in Ecuador hires a professional hostage negotiator.

The plot thickens: Sweetheart, shmeetheart. Meg Ryan took the bad-girl route by dallying with co-star Russell Crowe; and her fairy-tale Hollywood marriage to all-American Dennis Quaid went very publicly kaput.

-- Sandy M. Fernandez