The rich, famous and beautiful aren't immune from the woes of infidelity and heartbreak. In fact, some of Hollywood's hottest celebrities have been branded with a scarlet letter for stepping out on their significant others. And sometimes bouncing back from a tarnished relationship can be a public relations nightmare.
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Check out this list of 10 celebrity cheaters for proof that Hollywood is rife with steamy, illicit affairs. Only the strong survive...
1. Liam Hemsworth
Well-muscled Aussie actor Liam Hemsworth reportedly stepped out on his on-again, off-again leading lady Miley Cyrus. The other woman in this too-hot-to-handle love triangle was none other than Betty Draper. More accurately, it was blond bombshell January Jones, who portrays the icy Mrs. Draper on AMC's Mad Men. The alleged affair kicked off after this year's Oscars, when the pair was spotted canoodling at an after-party and later shared a ride home. Jones, for her part, thought the Hunger Games star was single at the time.
2. Kristen Stewart
Seems vampires aren't the only immortal beings. The Kristen Stewart/Robert Pattinson saga simply refuses to be buried. The Twilight couple has been in a steady cycle of break-ups and make-ups since the young starlet confessed to cheating on RPatz in July 2012. The other man in the picture – Rupert Sanders, who directed Stewart in Snow White and the Huntsman – was a married father of two at the time.{relatedarticles} Paparazzi images of Stewart and Sanders showed the pair kissing and canoodling in a parking lot. Other snaps showed them getting hands-on on a hiking trail, where Stewart was pictured holding Pattinson's baseball hat. Sources have said the infidelity is a continued source of contention for Stewart and Pattinson, who have reunited and split several times since the revelation. As for Sanders, his stunning wife, model-actress Liberty Ross, left him in the dust.
3. LeAnn Rimes
LeAnn Rimes recently copped to feeling guilty and disgusted with herself over her double-marriage-ending affair with Eddie Cibrian in 2009. {relatedarticles}At the time, however, the young actress/singer appeared to have no regrets about publicly hooking up with the married actor while she herself was hitched to Dean Sheremet. Cibrian and Rimes have since wed, but the world may forever sit in judgment of Rimes' previous indiscretions.
4. Ashton Kutcher
What's worse than getting caught cheating? How about getting caught cheating with not one, but two girls in a hot tub, as happened with actor Ashton Kutcher? The cherry on top of that illicit sundae? The alleged misdeeds took place on the anniversary of his wedding to Demi Moore. {relatedarticles}Sara Leal has claimed that she indeed slept with the married actor after the hot tub tryst, which took place while he and Moore were going through a rough patch. The couple – who married in 2005 – have since been embroiled in a public and bitter divorce, with sources claiming that Moore is pursuing many of Kutcher's assets.
5. Heidi Klum
Supermodel Heidi Klum and singer Seal appeared to have the perfect marriage until they said auf wiedersehen to love. The couple –who had three children together, plus Klum's child from a previous relationship – made an annual show of renewing their wedding vows on every anniversary. All those PDAs weren't enough to save the suffering relationship: The pair split in early 2012. {relatedarticles}In the flurry of bitter divorce proceedings, Seal intimated that Klum had stepped out on him with her bodyguard Martin Kristen. Seal later backpedaled and suggested his words were misconstrued, and he meant she had started dating Kristen before the divorce was official. Even still, questions remain about the timeline of the Klum/Kristen hookup.
6. Arnold Schwarzenegger
Arnold Schwarzenegger sullied his family man persona when news leaked that the Governator had fathered a love child with his family's housekeeper, Mildred Patricia Baena. The long-term affair is said to have taken place while he was married to Maria Shriver. {relatedarticles}It doesn't end there: Rumor has it the former governor also carried on numerous other extramarital dalliances throughout their relationship. For instance, the actor's 2012 memoir reveals that he stepped out with co-star Brigitte Nielsen in the mid-'80s while he was dating Shriver. Seems that just like the Terminator, old habits always come back.
7. Justin Timberlake
While it's tough to believe any man could step out on the preternaturally lovely Jessica Biel, gossip mags claimed Justin Timberlake did just that in 2010. The multi-talented performer is alleged to have seduced actress Olivia Munn with promises that he was no longer with Biel. {relatedarticles}The scandalous three-day affair was a flash in the pants. While Biel and Timberlake called it quits for a brief stint, they eventually reunited and got hitched in 2012. Munn is said to have felt regretful about the fair-weather fling.
8. John Mayer
Katy Perry is the latest celebrity to join the long list of ladies on whom John Mayer has allegedly cheated. Rumor has it the singer's legendary wandering eye has led him to step out on Perry, Taylor Swift and even Jennifer Aniston. {relatedarticles}While there have been no official confirmations, it has been suggested that Swift even penned a song – “Dear John” – about his behavior and their subsequent breakup.
9. Harry Styles
Poor Taylor Swift. The singer is once again listed on the losing side of a cheating scandal, this one involving One Direction's Harry Styles. The boy band lothario is said to have doggedly pursued Swift for months, only to cheat on her once he snagged her heart. Styles was forced to fess up when images of him locking lips with a young female friend hit the tabloids. {relatedarticles}Though Swift herself hasn't confirmed reports of Styles' less-than-dreamy behavior, she authorized a friend to dish on the details. The source says Swift learned of Styles' indiscretions while he was touring in Australia. Fans likely can expect to hear the full story on Swift's next hit record.
10. Jason Aldean
Country star Jason Aldean's life turned into a bona fide country tune when news broke that he'd been caught cheating on Jessica Ussery, his wife of 12 years. The adultery scandal broke when Aldean was photographed locking lips with former American Idol contestant Brittany Kerr. The extramarital make-out session took place in a bar, and Aldean later issued a public apology for the indiscretion. {relatedarticles}The move was too little, too late: Aldean and Ussery filed for divorce in April, citing irreconcilable differences.
These celebrity cheaters are just the tip of the iceberg when it comes to affairs of the heart in Hollywood. And while some of the adulterous antics have been forgiven, they'll likely never be forgotten.