1. Jessica Simpson Cheated On Nick Lachey With Johnny Knoxville

A lot of people would agree than an emotional affair is much worse than a physical one. Whereas intimate moments can just be a heat of the moment thing, an emotional affair has a LOT more feelings involved - and some people can even fall in love with others behind their spouse's back without physical stuff even being involved. And that was the case for Jessica Simpson, when she was still married to Nick Lachey.Jessica 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.Image Source: People.com

2. Jude Law Cheated On Sienna Miller With His Children's Nanny

It'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.He made a public apology to then-fiancé Sienna, as well as their families, for any pain he'd caused. Even though Law made a public statement, he admitted that there was no defence for his actions and only that he regretted what had happened. Jude Law issued the statement after the truth about his affair leaked.Image Source: Vanity Fair

3. Kevin Hart Cheated On His Pregnant Wife

Actor 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.He told The Breakfast Club in an interview that it was “beyond irresponsible” and that there’s no way to wriggle out of it. He stated that “you make your bed, your lay in it”. Well, one thing that can be said for the actor is that owning up to it, speaking honestly and admitting your mistakes is a big move – and not trying to justify it has to gain him some brownie points at least.Image Source: Tim's Blog

4. Mario Lopez Cheated On His Bride-To-Be At His Bachelor Party

It'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.His stance was that they were at his bachelor party with the intention of having a good time - like you should at a bachelor party, of course, but maybe not in THAT way. He admitted to American radio personality Howard Stern that he was wrong for lying, and that he should never have been in that position in the first place.Image Source: Travel + Leisure

5. Kris Jenner Cheated On Robert Kardashian

There's no shortage of drama when it comes to the Kardashian clan, and Kris 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.Kris spoke about having an affair when in her 30s, and still married to Robert. She admitted, when speaking about the affair in Diane von Furstenberg's podcast, that her biggest regret was how it had broken up her family. Affairs are always messier when kids are involved, of course!Image Source: Page Six

6. Meg Ryan Cheated On Dennis Quaid With Russell Crowe

Actress Meg Ryan is the Queen of rom-coms, so she's seen her fair share of relationships and love affairs. In real life, Ryan cheated on her then-husband actor Dennis Quaid, but it was little more than just a quick heat of the moment - she was actually dating another man while she was still married to Dennis.And that other man was fellow actor Russell Crowe. Though Meg admits that she dated Russell 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.Image Source: Showbiz Cheat Sheet

7. Arnold Schwarzenegger Cheated On His Wife With The Housekeeper

Apparently 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.When speaking about the situation, he admitted that hindsight is of course a wonderful thing, and if he could go back and change it, he would - but unfortunately, like his movie counterpart the Terminator, he couldn't go back in time, which left him to admitting his mistakes and dealing with them.Image Source: Ladder Supplements

8. Tiger Woods Admitted To Multiple Affairs

Legendary 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.During the conference, Tiger Woods admitted to his wrongdoings, saying "I was unfaithful", "I had affairs" and spoke candidly about what he'd done not being acceptable. During the time his wife discovered his affairs, the golfer was at the peak of his career. And when the news came out, his wife used his own golf club to smash his car.Image Source: CNBC

9. Jay-Z Cheated On Beyoncé

'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.Jay-Z has spoken openly about it, saying that the hardest thing is "seeing pain on someone's face that you caused" and that it would have been easy for most people to walk away and divorce. But the rapper and Beyoncé didn't divorce, and overcame the cheating problems to remain married - and are still going strong.Image Source: Glamour

10. Kristen Stewart Cheated On Robert Pattinson

There 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 many fans excited. But, alas, 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...After the photo leaked, Kristen issued a public apology - to Robert and to everyone. She apologised for the hurt and embarrassment she'd caused to all involved, and spoke out directly to Rob in her statement to say that she was "so sorry". Years later, Kristen spoke about being slut-shamed and unfairly receiving harsher backlash than the married director did...Image Source: Page Six

11. Usher Cheated On His Ex-Wife

If 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.Speaking about the situation, Usher explained that he felt "lost" towards the end of his marriage and "just wanted out". He spoke candidly about the situation during an interview with Oprah, and his ex-wife Foster indeed accused him of cheating.Image Source: Global Citizen

12. Katharine McPhee Cheated On Husband With Married Director

Not 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. Katharine spoke about how she got married when she was really young...Which could've played a part in her wanting to experience a little bit more outside of marriage. She's spoken openly about not having any regrets though, and that she's learned from everything she did in a "really deep way".Image Source: Mom.com

13. Kenneth Branagh Cheated On Wife Emma Thompson With Helena Bonham Carter

If you remember THAT scene from Love Actually, then you'll be ready to throw hands at anyone who hurts Emma Thompson in that way. 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.Emma has since explained that she doesn't hold a grudge and that you can't hold on to things like that. Especially since the three actors all appeared in the Harry Potter movies... She's since said that her and Helena made their peace with it years ago. And it turns out Emma drew on her own heartbreaking experience for that scene in Love Actually...Image Source: Entertainment Weekly

14. Miley Cyrus Was Rumored To Have Cheated On Liam Hemsworth But Denies It

There'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 every occurred during her marriage.She said that she'd be quick to admit to a lot of things, but she isn't going to admit that her marriage ended because of any infidelity. She explained that despite her 'party lifestyle' reputation, she was always committed to her husband. And Miley does seem the type of person that would admit or own up to anything she'd done.Image Source: Glamour

15. LeAnn Rimes And Eddie Cibrian Had An Affair With Each Other

Hit 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.When it's right it's right, I guess. LeAnn has since said that what happened in regard to the affair is not who she is, and that she doesn't want to live her life with regret. I suppose you can't really regret ending up with the person you really want to be with, even if it did start off in not the best way...Image Source: Country Living Magazine

16. Hugh Grant Cheated On Elizabeth Hurley With A Worker

Looking 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.The next morning, Hugh wrote a public apology to girlfriend Elizabeth Hurley. The actor admitted that he'd done something "completely insane" and that he apologies for hurting the people he loves, and embarrassing the people he works with. What could have simply been a momentary lapse turned into a huge scandal - such is life when you're an actor!Image Source: The Independent

17. Lamar Odom Cheated On Khloe Kardashian

Professional 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".Lamar has admitted that it's his "one regret" to have cheated multiple times with other women whilst being married to Khloe Kardashian. He's explained that he wishes he could take it back, and that it could have been different... surely Khloe feels that way, too!Image Source: ABC News

18. Jesse James Cheated On Sandra Bullock

Actress 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...Jesse admitted that he did "cheat on my wife" and that he "stood up and took accountability for it and apologised". It seems like that's the end of the story where Jesse is concerned, but at least Sandra discovered the truth so they could both go their separate ways...Image Source: The Mirror

19. David Boreanaz Cheated On His Wife

Lead 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"...Therefore more than one! He went on to discuss that the woman he had an affair with was asking for money, making him feel as though he was being extorted and ultimately pushing him to make an open confession.Image Source: VT.co

20. Tori Spelling and Dean McDermott Had An Affair With Each Other, Then Got Married... Then Dean Cheated On Tori

With 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!But sadly, even despite openly revealing the truth and coming officially together, Dean then went and cheated on Tori with another woman. Tori herself admitted the irony of it, saying she found it hard to blame the other woman because that's exactly how she and Dean got together in he first place. But as they say 'once a cheater, always a cheater'...Image Source: People.com

21. Zayn Malik Was Rumored To Have Cheated On Perrie Edwards

Zayn 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.Rumors surfaced that during their four-year relationship, Zayn had actually be unfaithful to Perrie. Their relationship ended when Zayn abruptly ended their engagement back in 2015, so it could have been after he'd already cheated (if rumors are to be believed) or simply because it was no longer what he wanted.Image Source: Glamour

22. Danny Cipriani Cheated On Kelly Brook

Actress 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.But that wasn't the end of it - apparently Danny then went on to be unfaithful to the woman he'd cheated on Kelly with in the first place. You'd think something like that would bring the pair together, but the two women then ended up fighting about him on Twitter in a public fued...Image Source: Evening Standard

23. Vernon Kay Sending Cheaty Texts Behind Tess Daly's Back

Vernonr 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...A few years later, after the initial truth had been unearthed, it turns out that Vernon was back at it texting the glamour model. Rhian herself has actually spoken out about her resentment for the fact that Vernon appeared to get away with it while her own career in turn was "ruined" due to the scandal...Image Source: Manchester Evening News

24. Ashley Cole Was Rumored To Have Cheated On Cheryl Cole

Singer Cheryl Cole and footballer Ashley Cole seemed like the Golden Couple, likely to only go from strength to strength. 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...There were reports that footballer Ashley had cheated on his wife; the rumours implied it was with hairdresser Aimee Walton, and this was alongside other rumours that he'd been unfaithful. Eventually, Cheryl filed for divorce - whether because of the cheating rumours being true, other reasons, or both, only she knows.Image Source: Closer Magazine

25. Tristan Thompson Cheated On Khloe Kardashian

As 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......It wasn't long before more drama surfaced. After appearing to work together through his first betrayal, it then surfaced regarding the drama of Tristan allegedly kissing Jordyn Woods - not only another woman, but one close to the Kardashian/Jenner family as their friend.Image Source: The News International

26. Ewan McGregor Cheated On Wife Eve Mavrakis

Ewan 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.Their marriage came to a bitter end, and it seemed for a while that McGregor and Mary Elizabeth Winstead were actually trying to make a go of it - and it seems to have worked, as the pair are now officially in a relationship and even have a son together...Image Source: Hello Magazine

27. Tony Parker Cheated On Wife & Desperate Housewives Star Eva Longoria

Eva Longoria's character in the hit TV show was the one who cheated on husband 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. Not only did he have an affair with another woman, but it actually turned out to be a friend.Eva discovered her husband's infidelity by reportedly finding text messages between Tony and the friend in question, Erin Barry. Erin was the wife of his former NBA teammate, too. After finding the messages and discovering the truth, Eva filed for divorce.Image Source: InStyle

28. Actor Josh Duhamel Cheated On Fergie

Actor 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.When the truth of the infidelity surfaced, the pair actually chose to stick it out and continue their marriage in hope to overcome what had happened - but apparently that didn't quite go to plan and, for whatever reason, the pair officially divorced in 2017.Image Source: The Sun