Demi Moore announced Thursday that she is filing for divorce from Ashton Kutcher after six years of marriage. This, after months of speculation that the couple's marriage was on the rocks following Kutcher's alleged infidelities.
Star magazine first accused Kutcher of cheating on Moore in September 2010, though the "Two And A Half Men" star vehemently denied the allegations at the time.
"I think Star magazine calling me a 'cheater' qualifies as defamation of character. I hope my lawyer agrees," he wrote on Twitter. "STAR magazine - you don't get to stand behind 'freedom of the press when you are writing fiction."
Cheating allegations resurfaced in Star one year later in September 2011; this time, the magazine claimed Kutcher cheated on Moore with a 21-year-old brunette he met at a bowling alley.
Two weeks later, 23-year-old Sara Leal revealed herself as Kutcher's alleged mistress, claiming that they had unprotected sex in the actor's Hard Rock hotel suite in San Diego.
Whether or not the allegations are true, Kutcher isn't the first celeb to supposedly stray -- and he certainly won't be the last. Here, 5 other celebrity couples who divorced amid cheating allegations.
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Jennifer Aniston and Brad Pitt
Jennifer Aniston <a href="http://today.msnbc.msn.com/id/8797298/ns/today-entertainment/t/aniston-says-pitt-missing-sensitivity-chip/#.TsWPjIA4Pjw" target="_hplink">ended her 4 1/2-year marriage </a>to Brad Pitt in March 2005, amid reports that Pitt was cheating on her with co-star Angelina Jolie. <a href="http://www.vanityfair.com/culture/features/2005/09/aniston200509" target="_hplink">Aniston admitted </a>that "the world was shocked and I was shocked," when<a href="http://www.hollywood.com/news/Brad_Pitt_and_Angelina_Jolie_Caught_in_Revealing_Photos/2439859" target="_hplink"> photos were published</a> of Pitt and Jolie on a beach in Africa while the pair were still married.
In April 2012, <a href="http://www.usmagazine.com/celebrity-news/news/angelina-jolie-cried-when-brad-pitt-proposed--2012184" target="_hplink">Pitt proposed to Jolie</a> in front of the couple's six children. Aniston got <a href="http://www.people.com/people/article/0,,20620514,00.html" target="_hplink">engaged to actor/screenwriter Justin Theroux</a> several months later in August 2012.
Sandra Bullock and Jesse James
Sandra Bullock<a href="http://www.huffingtonpost.com/2010/04/28/sandra-bullock-adopts-bab_n_554785.html" target="_hplink"> filed for divorce</a> in April 2008 after Jesse James' numerous indiscretions surfaced. The split was <a href="http://www.huffingtonpost.com/2010/06/28/sandra-bullockjesse-james_n_628121.html" target="_hplink">finalized in June 2010</a>. "It's because of my poor judgment that I deserve everything bad that is coming my way," <a href="http://www.huffingtonpost.com/2010/06/28/sandra-bullockjesse-james_n_628121.html" target="_hplink">he said in a statement</a>. "This has caused my wife and kids pain and embarrassment beyond comprehension, and I am extremely saddened to have brought this on them."
James reportedly got <a href="http://www.huffingtonpost.com/2012/11/21/jesse-james-engaged_n_2172742.html" target="_hplink">engaged for the fifth time</a> in November 2012 when he proposed to <a href="http://www.hollyscoop.com/jesse-james/jesse-james-engaged-5th-time.html" target="_hplink">drag racer and Paul Mitchell heiress Alexis DeJoria</a>.
Leann Rimes and Dean Sheremet
Rimes and her ex-husband, Dean Sheremet, <a href="http://www.people.com/people/article/0,,20332328,00.html" target="_hplink">divorced in December 2009</a> amid revelations that <a href="http://www.huffingtonpost.com/2011/04/25/leann-rimes-on-affair-wit_n_853535.html" target="_hplink">Rimes had an affair</a> with her "Northern Lights" co-star, Eddie Cibrian. "I know that I didn't do it the right way,"<a href="http://abcnews.go.com/Entertainment/leann-rimes-marries-eddie-cibrian-singer-clean-affair/story?id=13435902" target="_hplink"> Rimes said of her relationship with Cibrian</a>. "I didn't have the tools to know how to do it the right way...I'm not glad it happened, but I know why it did." Rimes and Cibrian <a href="http://www.people.com/people/article/0,,20484223,00.html" target="_hplink">married in April 2011. </a>
Uma Thurman and Ethan Hawke
Uma Thurman and Ethan Hawke <a href="http://www.people.com/people/article/0,,1212898,00.html" target="_hplink">married in 1998</a>. In 2004, <a href="http://www.people.com/people/article/0,,1212898,00.html" target="_hplink">Thurman filed for divorce</a> from the actor amid reports that Hawke had been <a href="http://www.guardian.co.uk/film/2012/feb/08/ethan-hawke-interview" target="_hplink">unfaithful with the couple's nanny,</a> Ryan Shawhughes. In June 2008, Hawke <a href="http://www.eonline.com/news/2856/ethan-hawke-a-twice-married-man" target="_hplink">tied the knot </a>with an already pregnant Shawhughes. He maintains, though, that their <a href="http://www.dailymail.co.uk/tvshowbiz/article-1034692/Yes-married-Ethan-Hawke-admits-tied-knot-childrens-nanny.html" target="_hplink">relationship did not begin until after</a> he and Thurman were through.
"The story of us breaking up over infidelity has been an annoying one," <a href="http://www.eonline.com/news/ethan_hawke_impregnates_former_nanny/57349#ixzz1e0sDiPdW" target="_hplink">Hawke told </a><em>Details </em>magazine back in 2004. "If our problems were that simple, we'd still be together. Uma and I were having troubles long before the press got ahold of us."
In July 2012, Thurman <a href="http://celebritybabies.people.com/2012/10/17/uma-thurman-arpad-busson-name-daughter-rosalind-arusha-arkadina-altalune-florence/" target="_hplink">welcomed daughter Luna</a> with her beau Arpad Busson.
Tori Spelling and Charlie Shanian
Tori Spelling and ex-husband Charlie Shanian <a href="http://www.people.com/people/article/0,,1117511,00.html" target="_hplink">split in October 2005</a> due to her affair with her then-co-star, Dean McDermott. In Spelling's 2008 memoir "sTORI Telling," she discusses the demise of their brief union and details her affair with McDermott, to whom <a href="http://www.people.com/people/article/0,,1191681,00.html" target="_hplink">she is now married.</a>
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First Posted: 11/18/11 12:23 PM ET Updated: 11/18/11 07:47 PM ET