After Us reported in May that Jon -- the 32-year-old husband to Kate and father to sextuplets and twins -- has had a three-month affair with
23-year-old schoolteacher Deanna Hummel, Kate acknowledged that they might split. Jon, who had been suspicious of his wife's relationship with her bodyguard, attests that he never cheated, but a family source said that the TLC couple does not want to work on fixing their relationship.
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Kathy Griffin and Matt Moline, My Life on the D-List
The comedian's husband Matt Moline was her sidekick on her two-time Emmy winning Bravo reality show when it debuted in 2005. Soon after, she accused him of stealing $72,000 from her bank account, and they divorced in May 2006. The single D-lister's fifth season is set to debut in June.
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Nick Lachey and Jessica Simpson, Newlyweds
The popular reality show -- which aired on MTV from 2003 to 2005 -- chronicled the couple's marriage from their post-wedding honeymoon phase to squabbling as her success eclipsed his own. He blamed the intensity of the show, in part, for their divorce in November 2005. She disagreed: "It made me understand what marriage is... We enjoyed watching those episodes, and that will always be a time I cherish."
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Flavor Flav and Brigitte Nielsen, Strange Love
The unconventional romance that budded on The Surreal Life resulted in their own spinoff. Due to mutual jealousy, the two went their separate ways shortly after its single season ended in April 2005, with Nielsen choosing her Italian boyfriend, Mattia Dessi. The rapper went on to greater reality stardom with the the Flavor of Love franchise.
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Andrew Firestone and Jen Schefft, The Bachelor
The show's third season bachelor gave his final rose to Schefft, and although she moved to be with him in San Francisco, the couple called off their engagement a few months later in December 2003. They have both found love away from TV. He married model Ivana Bozilovic and has a newborn son, and after she turned down two proposals on The Bachelorette married fellow Chicagoan in May.
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LuAnn and Alex de Lesseps, Real Housewives of New York City
Countess LuAnn de Lesseps has been quite attached to her British label on the Bravo show that first aired in March 2008, but she confirmed to Us in April that she and the Count were splitting. "It's been really difficult for me," she said. "I just need time." She separated from her husband of 16 years after learning that he met another woman in Europe. Still, she said, "I'll always be the Countess!"
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Shanna Moakler and Travis Barker, Meet the Barkers
The on-and-off couple have divorced, gotten back together and officially split since their MTV reality show. The series followed the married life of the drummer and beauty queen. After a bitter public split, the couple finalized their divorce in February 2007. After the former Blink-182 star's near-fatal plane crash last year, the parents of three children moved back in together in September, only to end their relationship again in April.
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Whitney Port and Jay Lyon, The City
When the L.A. fashionista moved to New York City to film her Hills spinoff, she rekindled a budding romance with Australian musician Jay Lyon. In the show's first season finale, however, the two parted ways. They split in March after dating for less than a year. "There were a few factors in their relationship that led to their split and fans saw those play out on-air," show creator Adam Divello told Us.
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Melissa Rycroft and Jason Mesnick, The Bachelor
In March, Us reported that after the single dad gave the final rose -- and the 3.1-carat Neil Lane ring -- to the former Dallas Cowboys cheerleader in the finale, he shocked audiences by breaking things off six weeks later in a taped special. He decided to take another stab at his relationship with rejected finalist Molly Malaney. Rycroft, however, moved on quickly -- to another reality show -- by becoming a Dancing With the Stars front-runner!
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Jesse Csincsak and Deanna Pappas, The Bachelorette
Four months after becoming engaged as part of ABC's hit series, the 2007 Bachelor reject and the professional snowboarder announced their split in November 2008. "She's a great person, but she wasn't willing to try anymore," he said. "She wanted something different. The answer I got was, 'I love you, but I'm not in love with you.'"
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Holly Madison and Hugh Hefner, Girls Next Door
Although Madison shared the Playboy Mansion with her costars Kendra Wilkinson and Bridget Marquardt, she was always Hef's No. 1 girlfriend. "I had planned to spend the rest of my life with Holly," he said in October 2008, adding that the persistent strain was her desire to have children. Despite the breakup, Madison continued filming the sixth season of the show -- which first aired on E! in 2005 -- and said "it's going to be even better."
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Tiffany Lynn and Ashley Parker Angel, There & Back
After striving for boy band fame in Making the Band, the former O-Town singer and fiancee Tiffany Lynn -- parents of two-year-old son Lyric -- called off their engagement in July 2008, two years after their own MTV reality show -- which was all about impending parenthood and trying to make it in the music business.
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Linda Bollea and Hulk Hogan, Hogan Knows Best
Originally intended to showcase the professional wrestler's antics with his wife and teen kids Brooke and Nick, their 23-year marriage unraveled on-camera. The reality show, which aired in 2005 up until their divorce in November 2007, resulted in a spinoff entitled Brooke Knows Best. "Without a doubt, this one is the most formidable opponent I've ever run into," Hogan said during their contentious legal battle.
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Kevin Federline and Britney Spears, Chaotic
The pop star and her backup dancer hubby Kevin Federline turned home videos -- that chronicled their initial meeting, courtship and wedding -- into this 2005 UPN limited-run reality series. The couple, who had two sons together, divorced in November 2006 after two years of marriage.
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Whitney Houston and Bobby Brown, Being Bobby Brown
Although his Bravo reality show, which was only greenlighted when Houston agreed to be a regular, received high ratings, it marked the end of their 14-year marriage. The series showcased the lives of the couple -- and included her now-famous "Hell to the no!" catchphrases -- but the one-time parents split in September 2006 after one year of filming.
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Lauren Conrad and Jason Wahler, The Hills
The former Laguna Beach star dated Kristin Cavallari's ex on-and-off for a year in 2005. She even visited Jason -- who has had four drinking-related arrests -- in jail once. As a Teen Vogue intern on the MTV series, she also turned down a prestigious summer trip to Paris to spend the summer with him. The two called it quits for good in August 2006.
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Dave Navarro and Carmen Electra, 'Til Death Do Us Part
The seven-episode reality show charting the run-up to their 2003 wedding didn't live up to its name. The Jane's Addiction guitarist and the model split in July 2006 and filed for divorce shortly after their three years of marriage.