Random Couples in Real Life Who Played Siblings (16 items)

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  (#10) Ian Somerhalder

  • 40

  Boone (Ian Somerhalder) and Shannon (Maggie Grace) played step-siblings with a very... uh... unique relationship on ABC's Lost. According to Us Weekly, the sparks between the two also flew off-screen and they dated briefly in 2006. 
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  (#1) Michael C. Hall

  • 48

  Michael C. Hall and Jennifer Carpenter started dating after playing brother and sister on the Showtime hit Dexter. As Hollywood Life explained, they tied the knot in 2008 and then divorced in 2011 while the show was still filming. 
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  (#2) Matthew Broderick

  • 56

  Matthew Broderick and Jennifer Grey played brother and sister in Paramount Pictures' Ferris Bueller's Day Off. Grey's Jeanie Bueller was all about trying to get her older brother caught for his schemes. After filming, Broderick and Grey were engaged for a while, but the happy ending was "ruined" following the couple's involvement in a fatal accident while vacationing in Ireland. 
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  (#4) Lauren Graham

  • 51

  Lauren Graham and Peter Krause, co-stars on NBC's Parenthood, had been dating for nearly five years when Ellen Degeneres brought up the question of marriage on her show in 2014. "I don't know. We are very happy as we are and I never have a good question for this answer," Graham responded. Krause played series lead Adam Braverman and Lauren Graham portrayed his sister, Sarah. 
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  (#15) David Cassidy

  • 68

  Susan Dey and David Cassidy played singing and performing siblings Laurie and Keith Partridge on ABC's The Partridge Family. Cassidy revealed in his autobiography, C’Mon Get Happy, that "Susan lacked the slutty aspect of a female that I always found so attractive.'' The two were rumored to have dated. In Shirley Jones' memoir, she explained that Dey "had a great big crush on David, and he didn’t reciprocate her feelings.”
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  (#7) Evan Rachel Wood

  • 31

  Evan Rachel Wood played Shane West's little sister on ABC's Once and Again. The show ended in 2002, but the two didn't start dating until the summer of 2009. The two were spotted when the then-21-year-old actress stepped out with West to celebrate his 31st birthday. 

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