1. Jessica Simpson Cheated On Nick Lachey With Johnny Knoxville

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People.comJessica had an emotional affair with actor and stunt performer Johnny Knoxville. She admitted that an emotional affair was "worse than a physical one". She said that the emotional bond she and Johnny had seemed much worse a betrayal of her marriage than being intimate would have been.
2. Jude Law Cheated On Sienna Miller With His Children's Nanny

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Vanity FairIt's no surprise actor Jude Law might be considered a lady's man, but he made headlines for cheating on Sienna Miller, who was his fiancé at the time. The actor cheated on Sienna with the nanny - not just anyone's nanny, either, but his own children's nanny. Jude spoke openly about it after the truth came out, saying that he's "deeply ashamed" and upset about what happened.
3. Kevin Hart Cheated On His Pregnant Wife

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Tim's BlogActor and comedian Kevin Hart came clean to the world about cheating on his wife. Not only was she his wife, but she was his pregnant wife at the time, too. Hart referred to the cheating scandal as his “dumbest moment”. He owned up to it, though, stating that he’s guilty, regardless of what happened or what was involved.
4. Mario Lopez Cheated On His Bride-To-Be At His Bachelor Party

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Travel + LeisureIt's one thing to cheat on your partner or your spouse, but to actually cheat when you're days away from getting married to the one you love, and cheat DURING YOUR BACHELOR PARTY - that's a whole new level. But it's one that actor Mario Lopez went to willingly. He cheated on ex-wife Ali Landry at his bachelor celebration.
5. Kris Jenner Cheated On Robert Kardashian

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Page SixKris Jenner's marriage to Robert Kardashian got its fair share of fame and media coverage. It turns out that her marriage to Robert ended because she had an affair. Kris explained that they got married when they were very young - they met when they were 18 and married at 22 - so maybe commitment at such a young age got too much in the end.
6. Meg Ryan Cheated On Dennis Quaid With Russell Crowe

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Showbiz Cheat SheetRyan cheated on her then-husband actor Dennis Quaid. Though Meg admits that she dated Russell Crowe while still being married, she's openly said that there's a bigger story to the situation - namely that husband Dennis had been unfaithful to her during their marriage, and that she'd found out more about his infidelities only after they'd got divorced.
7. Arnold Schwarzenegger Cheated On His Wife With The Housekeeper

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Ladder SupplementsApparently it's a very dangerous game to have nannies or housekeepers when you're a big ol' celebrity, and famous action man Arnold Schwarzenegger spoke openly about not only having an affair with his housekeeper, but actually fathering a child with her. The affair occurred behind his then-wife Maria Shriver's back.
8. Tiger Woods Admitted To Multiple Affairs

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CNBCLegendary golfer Tiger Woods became known for something a little different when reports of not only one, but multiple affairs came to light. His marriage reportedly broke down after news of the affairs came out, and so much so that he was forced to do an actual press conference to address what had happened.
9. Jay-Z Cheated On Beyoncé

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Glamour'Beyoncé' and 'cheating' in the same sentence just doesn't compute. Jay-Z and Beyoncé always seemed the ultimate power couple, so it may come as a shock to learn the rapper cheated on his Queen B wife. If you're a fan of Beyoncé and have already heard her album Lemonade, then you'll already know about the whole Jay-Z cheating scandal.
10. Kristen Stewart Cheated On Robert Pattinson

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Page SixThere was a time when Bella and Edward were couple goals (if you were Team Edward, that is) so the news that Kristen and Robert were actually dating in real life got fans excited. But, Kristen cheated on Robert with director Rupert Sanders. At the time Kristen was dating Robert, Rupert was also married with two children. The pair were photographed kissing...
11. Usher Cheated On His Ex-Wife

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Global CitizenIf you're a fan of Usher, then you'll be aware of his album titled 'Confessions' - so you might be wondering what he could be confessing to, whether he's confessing to anything at all, and - if he is - who the confessions are about. Apparently Usher wasn't faithful to his ex-wife Tameka Foster.
12. Katharine McPhee Cheated On Husband With Married Director

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Mom.comNot only did the singer and actress Katharina McPhee cheat on her husband Nick Cokas, but she was photographed doing it, too. The photo revealed her locking lips with TV show Smash director Michael Morris while she was still married. And Morris was also married at the time, too.
13. Kenneth Branagh Cheated On Wife Emma Thompson With Helena Bonham Carter

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Entertainment WeeklyIf you remember THAT scene from Love Actually, then you'll be ready to throw hands at anyone who hurts Emma Thompson. But it turns out that husband-at-the-time Kenneth Branagh did just that, when he ended up cheating on Thompson with Frankenstein co-star Helena Bonham Carter. Emma and Kenneth were married for six years before their split.
14. Miley Cyrus Was Rumored To Have Cheated On Liam Hemsworth But Denies It

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GlamourThere's no doubt that Miley Cyrus is a chaotic personality in the best possible way, so rumours that she might have cheated on husband-of-the-time Liam probably wouldn't be something we'd be too surprised about based on her free-spirited personality. But despite the rumours that cheating happened, the singer and actress has denied anything like that ever occurred.
15. LeAnn Rimes And Eddie Cibrian Had An Affair With Each Other

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Country Living MagazineHit country singer LeAnn Rimes was married when she had an affair with actor Eddie Cibrian - and actor Eddie was married to someone else, too. Rather than the affair being a mistake and something to regret, LeAnn and Eddie actually ended up divorcing their spouses in order to be together.
16. Hugh Grant Cheated On Elizabeth Hurley With A Worker

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The IndependentLooking at Elizabeth Hurley and Hugh Grant from an outsider's point of view, you'd think they were the picture-perfect couple. But it turns out even Elizabeth's stunning good looks and charm weren't enough for Hugh when he got caught with a worker. He was actually arrested for it in 1995 when they were caught together in the car.
17. Lamar Odom Cheated On Khloe Kardashian

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ABC NewsProfessional basketball player Lamar seemed like the perfect partner for Khloe Kardashian, but as is always the case with relationships in this family, no one is safe from drama. And it turns out that Khloe bore the brunt of it when it turns out Lamar Odom cheated on her - not only once, but with "multiple women".
18. Jesse James Cheated On Sandra Bullock

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The MirrorActress Sandra Bullock's marriage to fellow actor Jesse James came to an end when she discovered that he'd cheated on her - with multiple women. Jesse has admitted openly about what he did, and as always in these situations, it's always a TINY bit better when the person in question actually takes accountability for it...
19. David Boreanaz Cheated On His Wife

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VT.coLead actor of the hit series Bones David Boreanaz stepped forward to admit his infidelity after cheating on his wife. The person he had an affair with also apparently tried to extort him for their hook-up. When talking about the situation, David also spoke about his marriage being "tainted with my infidelities"...
20. Tori Spelling and Dean McDermott Had An Affair With Each Other, Then Got Married... Then Dean Cheated On Tori

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People.comWith me so far? So actress Tori Spelling and Dean McDermott hooked up for an affair when they were both married to other people. Eventually, they openly left their marriages in order to tie the knot with each other - so you could say their affair was about a little bit more than a casual hook up!
21. Zayn Malik Was Rumored To Have Cheated On Perrie Edwards

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GlamourZayn Malik of One Direction fame and Perrie Edwards of Little Mix appeared to the perfect X-Factor couple. They were even so serious that Zayn got a tattoo of her, and the pair eventually got engaged. So things looked great. The pair were together for four years before they sadly (for many fans) called it quits.
22. Danny Cipriani Cheated On Kelly Brook

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Evening StandardActress and model Kelly Brook and her partner Danny Cipriani were in a relationship for two years before things came to an end. Kelly discovered that partner Danny had given his number to a stripper whilst on a night out... In retort, Brook punched him in the face, which must have been satisfying.
23. Vernon Kay Sending Cheaty Texts Behind Tess Daly's Back

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Manchester Evening NewsVernon Kay and Tess Daly have always been adorable couple goals, and you'd be shocked to ever think one of them would want to cheat on the other (I mean, look at them). But years ago it came to light that Vernon had been busy sending flirtatious texts behind wife Tess Daly's back. The texts were sent to glamour model Rhian Sugden...
24. Ashley Cole Was Rumored To Have Cheated On Cheryl Cole

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Closer MagazineSinger Cheryl Cole and footballer Ashley Cole seemed like the Golden Couple. Every time you saw the pair they seemed loved up - and obviously, getting married is a sure sign you're in it for the long haul. They pair got married after a year of meeting, but problems started months after when he cheated on her.
25. Tristan Thompson Cheated On Khloe Kardashian

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The News InternationalAs if Khloe Kardashian hadn't put up with enough cheating scandal and heartbreak, another scandal came to light in that Tristan Thompson had not only cheated on Khloe, but done so days before she was due to give birth to their son, True Thompson. While Khloe and Tristan fought and made up to get through this scandal...
26. Ewan McGregor Cheated On Wife Eve Mavrakis

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Hello MagazineEwan McGregor has been a lot of people's biggest crush, and it turns out he was also actress Mary Elizabeth Winstead's, too, when the Fargo co-stars were pictured out in public together locking lips. All while Ewan was married to his long-term wife Eve Mavrakis, who always appeared to be end-game in a happy marriage.
27. Tony Parker Cheated On Wife & Desperate Housewives Star Eva Longoria

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InStyleEva Longoria's character in the TV show was the one who cheated on Carlos with the gardener, but in real life, it was actress Eva who was getting cheated on. Her husband, former NBA player Tony Parker, ruined their marriage by having an affair. Eva discovered her husband's infidelity by reportedly finding text messages between Tony and her friend, Erin Barry.
28. Actor Josh Duhamel Cheated On Fergie

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The SunActor Josh Duhamel was married to Black Eyed Peas star and singer Fergie, after the pair first met in Vegas and hit it off. The pair married in 2009, but Fergie was hit by rumors of her husband being unfaithful less than a year after the pair officially tied the knot. Actor Josh was caught cheating on Fergie with a stripper in Atlanta.
29. Actor Ashton Kutcher Cheated On Demi Moore

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Showbiz Cheat SheetAt the time, it seemed like actor Ashton Kutcher and A-Lister Demi Moore had hit the big time when they both got together. You wouldn't think that either of them would want to cheat on the other when they seemed such a hot couple, despite the fact that Demi was 15 years older than Ashton at the time.
30. Jada Pinkett Smith Was Rumored To Have Cheated On Husband Will Smith

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NBC NewsWill Smith and Jada Pinkett Smith have ALWAYS been couple goals. They're one of those couples a lot of people grew up with and thought were end-game, just like Jay-Z and Beyoncé. But then the rumours began in 2020 that Jada had actually been unfaithful to Will and cheated on his with singer August Alsina.
31. MLB Star Alex Rodriguez Accused Of Cheating On Jennifer Lopez

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SheKnowsThis wasn’t the first time that MBA star Alex was accused of cheating, but when it comes to superstar Jennifer Lopez, there were allegations that he’d cheated on her with Madison LeCroy, a reality TV star. Both Alex and Madison said that their ‘relationship’ never got physical.
32. Scott Disick Suspected Of Cheating On Kourtney Kardashian

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People.comScott and Kourtney’s relationship was always on-again, off-again, and they eventually did officially end the relationship. But whilst still together, there were rumors of Scott cheating due to texts to another woman found on his phone, as well as pictures of him on a party boat.
33. Gotham Star Morena Baccarin Cheated On Husband Austin

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People.comActress Morena Baccarin was married to husband Austin Chick for three years, but her chemistry with Gotham co-star Ben McKenzie got the better of her. Austin filed for divorce after accusing his wife of cheating with Ben – and now Morena and Ben are officially married!
34. Basketball Star Nick Young Cheated On Rapper Iggy Azalea

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BillboardThis once-hot couple were engaged to be married prior to their split, when Iggy found out about Nick Young cheating on her. She actually found out through home security footage, and he cheated with more than one woman. Iggy called off the engagement after finding the footage.
35. Gavin Rossdale Cheated On Gwen Stefani

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Hello MagazineGavin proves once again why celeb couples shouldn’t get a nanny, because he ended up cheating on superstar Gwen with his kids’ babysitter. The affair actually lasted for years, and Gwen discovered the truth after finding texts on their iPad - the family iPad, no less.
36. Actor Ben Affleck Reportedly Cheated On Jennifer Garner

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InsiderYep, you guessed it – with the nanny. They always seemed like such a sweet couple, especially with having three children together, but Ben reportedly cheated on Jen with the nanny. They had actually already decided to divorce before Jen found out.
37. Brad Pitt Cheated On Jennifer Aniston

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Marie ClaireThis dream Hollywood couple were the epitome of fairytale romance – until Brad Pitt cheated on Jen with Angelina Jolie. But it wasn’t just a fling – Brangelina had fallen in love, whilst he was still married to Jen, and got married themselves officially after the split. Sadly, that wasn’t meant to be, either.
38. Rapper G-Eazy Cheated On Halsey

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DistractifyThis musical duo were a couple for no longer than a year when G-Eazy decided to cheat on singer Halsey. Halsey hasn’t made any public statement about how she found out the truth, but she has used her music (and her social media) to call him out for it.
39. Offset Cheated On Wife Cardi B

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BBCNot only has rapper Offset cheated on Cardi B once, but he’s done it numerous times even after being caught. Cardi B knows when he cheats, and she keeps taking him back – she’s even admitted to cheating herself, too. She actually filed for divorce, but then decided not to go through with it.
40. Kieran Hayler Cheated On Wife Katie Price

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Daily RecordKatie Price not only found out that husband Kieran Hayler had been cheating on her, but with her best friend no less. She also found out the news whilst pregnant with their second child together. After working through it, he cheated again… with the nanny.
41. Mary Berry Cheated On Husband Paul Hunnings

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Hello MagazineYou may be surprised to see baking queen Mary Berry on this list, but yep, she previously admitted to cheating on her husband, Paul. It was when they had first started dating, but she had then chosen to be with Paul exclusively and the pair are still married.
42. Footballer Wayne Rooney Cheated On Wife Coleen Rooney

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Hello MagazineThis pair of childhood sweethearts are also one of the big footballing couples, but it turns out it wasn’t always rosy. Wayne cheated on Coleen, and then there were rumours he cheated again a time later. They moved past the rumours and are still together.
43. Chat Show King David Letterman Cheated On Wife Regina Lasko

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ThecelebsinfoDavid had only been married to Regina for 6 months (but they’d been together for 20 years) when he admitted to sexual relationships with people who worked on shows with him – including his assistant. The assistant’s boyfriend even tried to blackmail Letterman into silence. Letterman and Regina are still together, and still married.
44. Hollywood Legend Jack Nicholson Cheated On Girlfriend Anjelica Huston

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W MagazineOne of Hollywood’s most intriguing love stories is the on-again off-again relationship between actors Jack Nicholson and Anjelica Huston. Their relationship officially came to an end when Jack told her he was having a baby with someone else – actress Rebecca Broussard. Although Jack decided to cheat, he maintained he and Anjelica had one of the best relationships.
45. Woody Allen Cheated On Actress Mia Farrow… With His Stepdaughter

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The GuardianAnd it gets stranger: he’s now married to the stepdaughter he cheated with. American film director Woody Allen was in a relationship with actress Mia Farrow, who had adopted daughter Soon Yi, when he then began an affair with Soon. The pair are now officially married.
46. Comedian Seann Walsh Cheated On Gilfriend With Dancer Katja Jones

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Evening StandardIf you’re a fan of Strictly then you’ll already know about this cheating saga: contestant and comedian Seann Walsh was spotted kissing dance partner Katja Jones (who was married) while in a relationship with his now-ex-girlfriend. She understandably didn’t take it too well, and broke up with him while also revealing the truth on social media.
47. Footballer Ryan Giggs Cheated On Wife Stacey

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The MirrorNot only did Ryan Giggs cheat on his wife, but he did so for 8 years. He as cheating on Stacey with her sister, Nancy. Nancy then reportedly claimed she was pregnant with Giggs’s baby, and asked him to pay for a termination. Not only that, but Ryan Giggs then allegedly had another affair with Imogen Thomas.
48. Ben Foden Cheated On Singer Una Healy

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Hello MagazineIf you’re a fan of the music group The Saturdays, then you’ll know Una Healy as one of the singers in the band. She was married to husband Ben Foden, but the pair split after their 6th wedding anniversary, based on reports that he had cheated on the singer.
49. Balthazar Getty Cheated On Wife With Sienna Miller

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The TelegraphDespite the fact actress Sienna was cheated on herself by Jude Law, she then began an affair with married man Balthazar, who also had four children with his wife. The pair eventually separated due to his unfaithfulness and he and Sienna officially dated before calling it quits.
50. Sienna Miller Allegedly Cheated On Jude Law With Daniel Craig

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RankerAgain, despite Jude Law’s cheating on her, Sienna was reportedly involved with co-star and Bond actor Daniel Craig. She did deny that they were in any sort of relationship, but she said that they had been ‘briefly involved’ at a point, despite her being in relationship with Jude.
51. Baking Legend Paul Hollywood Cheated On Wife Alex

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Daily ExpressThere’s no denying the silver fox has got charm, but Paul Hollywood used this to his advantage when he had an affair with his co-star on the America Bake Off show, Marcela Valladolid. He then split with his wife, Alex, who later came out to speak the truth about her break up with Paul and her struggles with the affair.
52. Footballer Peter Crouch Allegedly Cheated On Wife Abbey

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The TimesPeter Crouch and wife Abbey Clancy are football royalty, but their marriage hasn’t always been perfect. There were reports that Peter Crouch cheated on her with a teenage prostitute – all while she was pregnant with their first child together. The pair have spoken out about how it was a difficult time for them, but they have moved past it and remain married.
53. Singer Rita Ora Allegedly Cheated On Rob Kardashian
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Nicki SwiftRita Ora was previously in a relationship with Rob Kardashian, but during their relationship he decided social media would be the best place to claim that the singer had cheated on him – not once, but with 20 different men. Rita’s defence was denial, as well as saying she didn’t think she and Rob were in a relationship.
54. Actor Danny Dyer Reportedly Cheated On Wife Joanna Mas
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Irish MirrorActor Danny Dyer and his wife Joanna Mas apparently met a difficult time when it came to light that he might have cheated on her – and for a six-week duration affair. At the time, he moved out of the family home, but has since patched up his marriage with Joanna.
55. Former President Bill Clinton Cheated On Wife Hilary Clinton
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Den of GeekPresidents are never short of a scandal or two, and the affair between Bill Clinton and his intern Monica Lewinsky has gone down in history. Despite his affair, and despite the huge scandal it resulted in, Hilary and Bill Clinton are still married today.
56. Livia Giuggioli Cheated On Husband Colin Firth
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Sky NewsThat’s right, Livia cheated on acting legend and Mr Darcy himself, Colin Firth. Not only she did cheat, but she chose to do so – with her stalker. The pair had an affair during her marriage to Colin, and the man was then charged with stalking a year later.
57. Frank Gifford Cheated On Wife Kathie Lee Gifford

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TODAYWhen the news came out about Frank’s alleged affair – with a woman who was also married herself – he adamantly denied al claims. That was until stills and a video transcript came to light that Frank couldn’t deny. The pair tried to work through their marriage problems and remained together.
58. Hank Baskett Cheated On Wife Kendra Wilkinson
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US WeeklyWhilst she was 8 weeks pregnant with her husband, Hank’s, baby, Playmate Kendra found out that he had been cheating on her. The pair shared a reality show together which was no stranger to relationship, and even cheating, drama, but the pair eventually divorced in 2019.
59. Chad Michael Murray Allegedly Cheated On Sophia Bush
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GlamourChad Michael Murray and Sophia Bush were One Tree Hill legends, and they went on to become husband and wife as well as cast mates for the show. But after only 5 months, their marriage ended due to rumours that Chad had cheated on Sophia with model and actress Paris Hilton.
60. David Lucado Cheated On Britney Spears
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Deccan ChronicleThe pop sensation has had a pretty hard life but she was saved from further public scandal when photos of her boyfriend, Lucado, cheating on by kissing another women escaped the hands of the press. She broke up with him after finding out the truth about his cheating.