Breaking up is hard to do, even for celebrities. Take a look at the notable splits of 2013.
Robert Pattinson and Kristen Stewart: The couple called it quits in mid-May, according to People and E! Online. The pair, who dated for more than three years after meeting on the set of "Twilight," previously broke up in the summer of 2012 after the actress was caught cheating with her "Snow White and the Huntsman" director Rupert Sanders.
Jason and Jessica Aldean: The country singer filed for divorce on April 26 in Tennessee, the same day that reports circulated suggesting that the two were separating. In 2012, Aldean's marriage made headlines when he was spotted getting close with "American Idol" contestant Brittany Kerr at a bar.
Katy Perry and John Mayer: In March, "multiple sources" told Us Weekly that the couple's relationship had come to an end, at least for the time being. The couple reportedly separated for a bit in August 2012 before getting back together in September.
Ryan Seacrest and Julianne Hough: Sources told People magazine in March that the "American Idol" host and Hough, an actress/singer and former pro on "Dancing with the Stars," had split. The couple dated for more than two years.
Anna Kendrick and Edgar Wright: The couple confirmed the end of their four-year relationship in March. The Pitch Perfect actress, 27, and the Shaun of the Dead director, 38, began dating in 2009 after meeting on the set of Scott Pilgrim vs. the World.
Rachel McAdams and Michael Sheen: The couple officially announced their split in February. McAdams, 34, and Sheen, 44, took their romance public in October 2010 after meeting on the set of Woody Allen's film Midnight in Paris.
Michelle Williams and Jason Segel: The couple quietly began dating in March 2012 and quietly broke up in February 2013, according to reports.
Diane Lane and Josh Brolin: In February, the couple announced their split after eight years of marriage, reps for Brolin told CNN. The actor pair tied the knot in August 2004, and it was the second marriage for both.
Taylor Swift and Harry Styles: A source told People magazine that their romance came to an end after they reportedly spent time together over the holidays. It's been presumed that the duo started dating in mid-November 2012, when they were seen playing around and holding hands on the set of "The X Factor."
Britney Spears and Jason Trawick: In January, the couple announced they had ended their yearlong engagement. The decision was mutual, according to the couple. Spears and Trawick, who had been dating since 2009, became engaged in December 2011.
Ashley Judd and Dario Franchitti: A representative for Judd confirmed in January that the actress and champion race car driver were ending their marriage after more than 11 years. Shortly after the news broke, Judd tweeted that the pair will remain "family forever" despite the divorce. The pair got married in Frachitti's native Scotland in 2001.
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