#24. Blake Shelton & Miranda Lambert
The year was 2005, and country singer Blake Shelton was married to Kanyette Williams. Everything changed when he had to perform at the CMT 100 Greatest Duets concert with Miranda Lambert.
The two fell in love right then and there, and a whole year later, Shelton split from his then-wife. Shelton and Lambert got married in 2011 but split a few years later.
#23. Brad Pitt & Angelina Jolie
Their story was probably one of the biggest scandals in Hollywood history. Brad Pitt used to be married to Jennifer Aniston, and the two were probably the most famous couple in the world.
However, while filming Mr. & Mrs. Smith, Pitt started a relationship with Angelina Jolie. He eventually divorced Aniston and had three children with Jolie. The couple parted ways a couple of years ago.
#22. Britney Spears & Kevin Federline
The relationship between Britney Spears and her backup dancer, Kevin Federline, moved extremely fast. They were engaged after only three months of dating, but that's not the only thing that put this relationship all over the tabloids.
Federline was engaged to another woman, who was pregnant with his child at the time. Spears and Federline tied the knot shortly after but split up two years later.
#21. LeAnn Rimes & Eddie Cibrian
LeAnn Rimes and Eddie Cibrian were married to other people when they started an affair while on the set of Lifetime movie The Northern Lights in 2009.
Their affair was a total scandal, and people didn't take them seriously, but the two were really in love. They got married in 2011 and have been together all this time.
#20. Tori Spelling & Dean McDermott
Much like our previous couple, Tori Spelling and Dean McDermott fell in love on the set of Mind Over Murder in 2005, while they were married to other people.
Karma came back hard for Spelling when it was uncovered that McDermott cheated on her several times. The two are still together, however, and working on their issues.
#19. Gabrielle Union & Dwyane Wade
Basketball pro Dwyane Wade was married to Siohvaughn Funches-Wade, and they had two children with her when he started dating actress Gabrielle Union. However, both of them deny being together before Wade's divorce.
Regardless of what the truth is, Wade and Funches divorced, and Union officially came into the picture shortly afterward. The two got married in 2014 and have a daughter together.
#18. Alicia Keys & Swizz Beatz
Rapper Swizz Beatz was married to R&B singer Mashonda, and they had a newborn baby when he started hooking up with Alicia Keys. According to Keys, however, their marriage was already over when she came into the picture.
Keys and Beatz tied the knot in 2010 and now have two children together. They have stayed strong through all these years.
#17. Julia Roberts & Danny Moder
Julia Roberts was in a relationship with Benjamin Bratt when she met Danny Moder, the cameraman on the set of The Mexican.
Moder was married to makeup artist Vera Steimberg when he began dating Roberts, and the two ended their relationships to be with each other. They're still together and stronger than ever.
#16. Hugh Dancy & Claire Danes
Claire Danes actually belongs in this list twice. She first got together with actor Billy Crudup while he was married to his then-pregnant wife. In 2006, they got married.
Only two years later, Danes met actor Hugh Dancy on the set of Evening and dumped Crudup for him. They quickly tied the knot and have a child together.
#15. Melanie Griffith & Antonio Banderas
Melanie Griffith used to be married to Don Johnson. The two had a daughter, actress Dakota Johnson together, but split up in 1996.
The cause of their breakup was Spanish actor Antonio Banderas, who met Griffith on the set of Two Much and began an affair with her. He was also married at the time. The two were together for 20 years until their breakup in 2015.
#14. Jennifer Lopez & Marc Anthony
You may not remember this, but Jennifer Lopez and Marc Anthony tied the knot less than a week after his divorce from Dayanara Torres was finalized.
Despite their scandalous start, the two were happily married for seven years and had two children together. They finalized their divorce in 2011.
#13. Woody Allen & Soon-Yi Previn
The relationship between Woody Allen and Soon-Yi Previn can only be described as creepy. That's because the two started an affair while he was still married to actress Mia Farrow. But that's not all.
The real issue was that Soon-Yi was Farrow's adopted daughter, meaning he was Allen's stepdaughter. Farrow found out about their affair when she found naked pictures of 21-year-old Soon-Yi in their house. Despite their strange relationship, the two are still together and have two children.
#12. Debra Messing & Will Chase
Actress Debra Messing was married to Daniel Zelman for fifteen years until she started having an affair with Smash co-star Will Chase.
Her new relationship only lasted three years, however, and the two officially called it quits in 2014. She has been single ever since.
#11. Tiki Barber & Traci Lynn Johnson
Former NFL player Tiki Barber had just retired from the NFL when he started dating Traci Lynn Johnson. Everything would've been alright except for the fact that he had a wife of 11 years.
Not only that, but his wife was eight-months pregnant with twins. Eight days after his divorce was finalized, he married Johnson. They have a daughter together.
#10. Johnny Depp & Amber Heard
You've probably heard of the explosive divorce that Johnny Depp and Amber Heard went through, but did you know how they got together?
The two started dating while filming The Rum Diary in 2009 while Depp was still married to French singer Vanessa Paradis, his wife of 14 years. Nowadays, Heard and Depp are still fighting over their divorce in court and have accused each other of being abusive.
#9. Jerry Seinfeld & Jessica Sklar
Unlike most couples on this list, we have a case of 'the other man' here. Jerry Seinfeld has been married to Jessica Sklar for 21 years, but she was married to someone else when they met.
Sklar had met Seinfeld at the gym, and sparks flew between them. When she returned from her honeymoon with her first husband, she officially dumped him and married Seinfeld the following year.
#8. Ethan Hawke & Ryan Shawhughes
Ethan Hawke was married to Uma Thurman for six years, and they had two children together. Their marriage came to an end, however, when Thurman discovered that Hawke was having an affair with the nanny.
The nanny was Ryan Shawhughes, and she and Hawke have been together since 2004 and have two children of their own.
#7. Kelsey Grammer & Kayte Walsh
Actor Kelsey Grammer was married to Camille Grammer from 1996 to 2011. Just as Camille became part of the Real Housewives of Beverly Hills cast, Grammer began an affair.
Grammer had an affair with flight attendant Kayte Walsh, and when it was discovered, it was all a huge scandal. A few months after his divorce, he married Walsh.
#6. Prince Charles & Camilla Parker Bowles
Prince Charles was famously married to Princess Diana, but their marriage was unhappy. Charles allegedly married Diana because his family pressured him, but he had always been in love with Camilla Parker Bowles.
Instead of just divorcing Diana and marrying Camilla, however, Charles had an affair with Camilla while he was married. It wasn't until Diana had enough that they called it quits. Charles and Camilla have been together this whole time.
#5. Jason Aldean & Brittany Kerr
Jason Aldean was supposedly happily married to his wife, Jessica Ussery, but it all came crashing down when he was photographed kissing American Idol contestant Brittany Kerr at a bar.
Aldean tried to squash the infidelity rumors and even gave interviews alongside his wife, saying they were stronger than ever, but this facade could not be maintained long. They split up in 2013 and he got married to Kerr a year later.
#4. Rebecca Romijn & Jerry O'Connell
Rebecca Romijn was on the verge of breaking up with her husband, John Stamos, when she met Jerry O'Connell. O'Connell was also taken at the time.
He was dating E! News anchor Giulianna Rancic, who was blindsided by the affair. Romijn and O'Connell tied the knot in 2007 and have two children together.
#3. Bruce Springsteen & Patti Scialfa
Bruce Springsteen got married to actress Julianne Phillips in 1985, but it didn't last long. Three years into their marriage, he met someone else: Patti Scialfa.
The two began an affair during the Tunnel of Love Express Tour, and when Springsteen finished his tour, he broke up with his wife. He and Scialfa have been together ever since.
#2. Mel Gibson & Oksana Grigorieva
Mel Gibson was married to Robyn Moore for 34 years, and they had seven children together. After such a long relationship, it honestly seemed they would be together forever.
But that was not the case, as Gibson began an affair with Russian beauty Oksana Grigorieva, who got pregnant pretty quickly. After their affair was discovered, Moore filed for divorce.
#1. Tom Brady & Gisele Bündchen
Tom Brady and Gisele Bündchen are arguably the most attractive couple in the world. They have been married since 2009 and have two children together.
However, most people forget how their romance began. The two got together while Brady had a baby on the way with Bridget Moynahan, his three-year girlfriend.