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Katie Holmes & Tom Cruise

After five years of marriage, Katie Holmes and Tom Cruise called it quits this summer. "This is a personal and private matter for Katie and her family," Holmes' attorney ...told People on June 29. "Katie's primary concern remains, as it always has been, her daughter's best interest." Parents to 6-year-old Suri, the couple tied the knot in 2006 after Cruise famously declared his love by jumping on Oprah Winfrey's couch! The divorce was finalized by August, making TomKat officially a thing of the past. According to People, the two will remain on speaking terms for the sake of Suri, who has been adjusting to life in the Big Apple with Katie since the split.

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Heidi Klum & Seal

After nearly seven years of marriage, supermodel Heid Klum and singer Seal went their separate ways shortly after ringing in the new year. On Jan. 21, TMZ first broke ...the news that the couple was planning to file for divorce -- and the next day, Heidi and Seal issued their own statement about their split: "While we have enjoyed seven very loving, loyal and happy years of marriage, after much soul-searching we have decided to separate," they said. "We have had the deepest respect for one another throughout our relationship and continue to love each other very much, but we have grown apart. This is an amicable process and protecting the well-being of our children remains our top priority." The couple tied the knot on May 10, 2005, and they have three children together: sons Henry Gunther and Johan Riley, as well as daughter Lou. Klum, who is now happily dating her bodyguard Martin Kirsten, was previously married to celebrity hairstylist Ric Pipino and has daughter Leni from her relationship with entrepreneur Flavio Briatore.

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Johnny Depp & Vanessa Paradis

After months of denying breakup rumors, Johnny Depp was finally ready to admit that his relationship with his longtime girlfriend, French actress Vanessa Paradis, ...had ended. They "have amicably separated," Depp's publicist said in a statement released to Entertainment Tonight on June 19. "Please respect their privacy and, more importantly, the privacy of their children." The couple (who are parents to Lily-Rose and Jack) were together for 14 years, but they hadn't appeared together on a red carpet in a year. In May, the actor, who has been recently linked with Amber Heard, insisted that the rumblings of their split were not true. "I can't say enough about it not being over," he said. If it wasn't over then, it definitely is now.

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Amy Poehler & Will Arnett

This was no laughing matter! After nine years of marriage, Amy Poehler and Will Arnett ended things in September. According to Us Weekly, a ...source explained that the split was "very amicable." The source reported, "The past few months have been rough for them, but I don't think anyone saw this coming." The Parks and Recreation star and the Up All Night star have two sons together -- Archie and Abel.

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Emily Maynard & Jef Holm

Emily Maynard is a bachelorette once more! The reality TV star and her fiance Jef Holm officially confirmed their breakup on Oct. 16. Despite their happy ending ...on the Bachelorette finale in July, the pair called off their engagement. "I am sorry to tell you that Jef and I have, indeed, parted ways," the single mother told People. "It was a very difficult and heartbreaking decision." Added her now ex: "What we shared was completely genuine and real and it breaks my heart but we have decided to break up."

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Peter Facinelli & Jennie Garth

After 11 years of marriage, Peter Facinelli and Jennie Garth ended their relationship during the spring. Reps for the Twilight star (who plays vampire Carlisle Cullen) ...and the former Beverly Hills, 90210 star confirmed their split on March 13. "While we have decided to end our marriage, we both share the same deep love and devotion to our children," they told People in a joint statement. "We remain dedicated to raising our beautiful daughters together. We ask for privacy and respect during this time." The couple has three daughters together -- Luca, Lola and Fiona.

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Avril Lavigne & Brody Jenner

On Jan. 16, Us Weekly reported that Brody Jenner and Avril Lavigne had broken up. The Grammy-winning singer and the former star of The Hills ...began dating in spring 2010 -- but according to multiple sources, the couple couldn't balance their individual careers with their relationship. "Every time he wanted to come back and take meetings to get his career back in order, she would make him go to Asia and Europe," an insider says of Lavigne. "He hasn't worked and he wants to. They were both unhappy because he wants to have his career, she wants him to stay with her." Well, the singer wasn't too torn up about the split -- by August, Lavigne was already engaged to Nickelback frontman Chad Kroeger.

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Taylor Swift & Conor Kennedy

Taylor Swift and Conor Kennedy turned out to be just a summer fling, not the real thing. "They quietly parted ways a while ago," a source told Us Weekly on ...Oct. 25. "It was just a distance thing. No hard feelings. They're fine." The country singer and the high school senior (who happens to be the grandson of Robert F. Kennedy) began dating in July, and through the duration of their relationship, they had been spotted crashing weddings, dining with her parents and swimming in Cape Cod. No worries -- Taylor was, er... swift in getting over the relationship. The blonde beauty picked herself right up and seems to have fallen into the arms of One Direction heartthrob Harry Styles.

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Eva Longoria & Mark Sanchez

Only a month after Eva Longoria confirmed to pal Mario Lopez that she was, indeed, dating football pro Mark Sanchez, the relationship fizzled and the ...duo officially called it quits. "Mark adores and respects Eva," a rep for the New York Jets quarterback told Us Weekly on Oct. 23. "It really was about scheduling more than anything else. They will remain close friends."

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Ben Flajnik & Courtney Robertson

We hate to say it -- but considering the low success rate of previous Bachelor couples, it wasn't too surprising that Ben Flajnik and Courtney Robertson called it ...quits. Two sources reportedly confirmed the breakup news to Us Weekly on Oct. 5. The duo had been together since Ben, who told the magazine that he "got out at the right time," popped the question in Switzerland on the show's finale. Shortly after the show aired, Ben was allegedly caught cheating, but the pair seemed to have patched things up in the months following. Robertson later admitted to Us Weekly that she "put up with more than [she] should" have and that she felt "brainwashed" after the show. The gal licked her wounds and, only weeks after the breakup news, was spotted smooching Bachelorette finalist Arie Luyendyk, Jr. Ok, we'll say it -- major upgrade, Courtney! Nice work!

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Ashlee Simpson & Vincent Piazza

Looks like Ashlee Simpson is a single lady once more. On Nov. 27, a source told Us Weekly that the single mom split from her boyfriend, Boardwalk Empire star ...Vincent Piazza. "There was no bad blood and no third party involved. It was honestly just a long distance relationship and it became too hard to make it work," the source explains. "It's not necessarily forever and they could get back together. Nobody is to blame. Just the distance." Simpson, who's mom to 4-year-old Bronx, split from ex-husband Pete Wentz in February 2011 and began dating Piazza in June that year.

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Adam Levine & Anne Vyalitsyna

Adam Levine is on the lookout for a new lady to sing sexy love songs to! On April 2, People reported that the Maroon 5 frontman and judge on The Voice... had split from his model girlfriend of two years, Anne Vyalitsyna. "Adam and I have decided to separate in an amicable and supportive manner. We still love and respect each other as friends. I wish him all the best," said the Russian-born model in a statement.

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Jenny McCarthy & Brian Urlacher

This summer, Jenny McCarthy became a single lady once again. The Playboy covergirl kept quiet while dating Chicago Bears linebacker Brian Urlacher, but opened up ...about their breakup once it was official. "Brian and I have decided to turn our romance into an amazing friendship," McCarthy told People on Aug. 16. "I will continue to be the biggest cheerleader for him. Go, Bears!"

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Hilary Swank & John Campisi

After a five-year courtship, Hilary Swank and John Campisi broke up this summer. The Oscar winner, who started dating the CAA agent months after her eight-year ...marriage to Chad Lowe fizzled, told In Style in 2010 that she and Campisi were in no hurry to walk down the aisle. "I believe in the sanctity of marriage. John and I, you know, we were both in long marriages and it's not something that we need to rush back into."

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Aaron Sorkin & Kristin Davis

Months after they first stepped out together, Oscar-winning screenwriter Aaron Sorkin and Sex and the City star Kristin Davis were reportedly broken up. "They're ...very different people," a close pal told In Touch. "She's focused on raising her daughter, Gemma, and he's working on his [career]." News of the romance between Sorkin and Davis broke in May, but the two had known each other for years. Despite their breakup, the source assured, "They'll definitely remain friends."

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Adrienne Maloof & Paul Nassif

As Bravo fans prepped for another season of The Real Housewives of Beverly Hills, hotel mogul Adrienne Maloof and husband Paul Nassif announced their split after ...almost ten years of marriage. The pair, who have three sons together -- Gavin and twins Colin and Christian -- reached a divorce settlement in November after a shaky few months, where they had even accused each other of physical and verbal abuse. "We want the best for each other and we're confident we can help each other make a continuing positive impact with our children," said the couple in a statement. "We're happy to be moving forward with our lives in a positive way, not only individually but as co-parents."

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Chris Brown & Karrueche Tran

Rumors had been flying for weeks that Chris Brown and Rihanna may be ...rekindling their romance -- so it was only a matter of time before Brown ended his relationship with model Karrueche Tran. "I have decided to be single to focus on my career," Brown, who began dating the aspiring model a year ago, told Us Weekly on Oct. 4. "I love Karrueche very much but I don't want to see her hurt over my friendship with Rihanna. I'd rather be single allowing us to both be happy in our lives." Recent Twitpics speak louder than words -- the situation between RiRi and Brown seems to be a bit steamier than "friendship." Of course, neither party will confirm if the relationship has been rekindled.

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Scarlett Johansson & Nate Naylor

After almost a year of dating, Scarlett Johansson and boyfriend Nate Naylor called it quits. A source confirmed to People on Oct. 15, that the actress and ...the advertising executive, who were first spotted getting cozy together in January in N.Y.C., were no longer an item. Pulling for ScarJo to find love? Don't fret! On Dec. 7, the Hitchcock starlet was seen engaging in some PDA with French journalist Romain Dauriac. Ooh la la!

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Russell Crowe & Danielle Spencer

After nine years of marriage, Russell Crowe and his wife, musician Danielle Spencer, separated in October. The couple, who met on the set of ...The Crossing more than 22 years ago, have two children together: sons Charles and Tennyson. Although the Gladiator star has yet to confirm the news, the Sydney Morning Herald says the split was amicable and that the boys will stay with Spencer in their Sydney manse, while Crowe stays in the States shooting his latest film production, Darren Aronofsky's biblical drama Noah

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Katie Holmes & Tom Cruise

After five years of marriage, Katie Holmes and Tom Cruise called it quits this summer. "This is a personal and private matter for Katie and her family," Holmes' attorney told People on June 29. ......"Katie's primary concern remains, as it always has been, her daughter's best interest." Parents to 6-year-old Suri, the couple tied the knot in 2006 after Cruise famously declared his love by jumping on Oprah Winfrey's couch! The divorce was finalized by August, making TomKat officially a thing of the past. According to People, the two will remain on speaking terms for the sake of Suri, who has been adjusting to life in the Big Apple with Katie since the split.