In Hollywood, by far the most common reason for married couples splitting is infidelity. We don't want to condone the actions of any movie star that ditches their other half for someone else, but... when you're working with some of the world's most beautiful people, extended “lunch breaks” in your co-star's trailer sure must be tempting...
Here's a round-up of some of the most controversial film star dalliances that paid for Hollywood divorce lawyers' Hawaiian holidays down the years.
[Related story: The movies that make you glad to be single]
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'Mr & Mrs Smith' (2005) - Brad Pitt & Jennifer Aniston
Perhaps the most famous example of what we're talking about here is the creation of 'Brangelina'. Angelina Jolie already had a bit of a reputation in her personal life and was instantly blamed by everyone for her affair with Brad Pitt. The world was well and truly 'Team Aniston' at the time and the press dined out on the story for months. Brad and Angelina have stayed the course though and are now the undisputed King & Queen of Movieland.
[Related link: Find your true love online]
'Proof of Life' (2000) – Meg Ryan & Dennis Quaid
After Russell Crowe stuck his angry Australian nose into Meg Ryan and Dennis Quaid's personal life, there really was no proof of life left in it. The pair's nine year marriage came to an end officially in July 2001. In an interview around the time, the actress claimed that her husband Dennis had been unfaithful throughout most of their time together. Meg and Russell didn't last long and the 'Sleepless in Seattle' actress was last seen breaking up US singer John Mellencamp's marriage. Oh, Meg!
'Cleopatra' (1963) – Elizabeth Taylor & Eddie Fisher
Liz Taylor and Richard Burton's fiery relationship is one of the most famous in celebrity history. The pair were married and divorced a couple of times and kept gossipers the world over chattering with their wild behaviour. Their beginnings were not without controversy either – Liz left her singer hubby Eddie Fisher for the Welsh acting legend. Taylor and Fisher's pairing was frowned upon anyway, though; Liz's ex before Eddie was Eddie's best friend who had died. And Eddie left America's darling Debbie Reynolds for Taylor. Confusing, eh?!
'To Have and Have Not' (1944) – Humphrey Bogart & Mayo Methot Bogart
In the case of this Howard Hawks classic, it was clearly a case of 'have' for its two main stars, Humphrey Bogart and the then 19 year-old Lauren Bacall. Their on-set affair put paid to Bogey's disastrous marriage to the interestingly-named Broadway actress Mayo Methot.
'Stromboli' (1950) – Ingrid Bergman & Petter Lindström
Here's some extra-marital business that ended in real trouble... When Swedish actress Ingrid Bergman wrote to the Italian auteur Roberto Rossellini to tell him how much she admired his work, he immediately invited her to collaborate with him. This partnership turned physical and she left her dentist husband for the director. Bergman was vilified in the US for her affair and was even denounced on the floor of the US Senate by senator Edwin Johnson for her 'indecent behaviour'. Which seems a bit harsh...
[Related link: Get all the latest celebrity relationship gossip on omg!]
'Dream House' (2011) – Rachel Weisz & Darren AronofskyYou had to feel sorry for lauded American director Darren Aronofsky last year when his missus, English actress Rachel Weisz left him. Not only did she ditch him for her co-star in the dire ghost story 'Dream House', that co-star was none other than 007 himself, Daniel Craig. And it's probably rather difficult to compete for ladies with James Bond, isn't it?
'The Getaway' (1972) – Steve McQueen & Neile Adams
Hollywood's Coolest Man© had a reputation for wooing his leading ladies. This was all well and good while he was a single man, but when he began seeing his 'Getaway' co-star, the beautiful 'Love Story' actress Ali McGraw, he happened to be married. But not for long. McQueen dumped his wife Neile and married Ali. Then divorced her five years later. Then married someone else two years after that...
'Dangerous Liaisons' (1988) – John Malkovich & Glenne Headly
Dick Tracey star Glenne Headly probably thought she was safe when she married John Malkovich. Without wanting to sound too rude, Ol' John has never featured too highly in any 'Sexiest Actors' lists, has he? And the thought of him hooking up with Michelle Pfeiffer on the set of 'Dangerous Liaisons' was one that probably didn't linger too long in Headly's mind. She didn't realise that cheating on your wife with the woman out of 'Scarface' is all just part of Being John Malkovich.
What do you make of these high-profile showbiz affairs? And have we missed any off our list? Get commenting below...