11 Celebrity Couples Who Broke Up While Working Together

KALEY CUOCO AND JOHNNY GALECKI, 2007-2009

Fiction imitated reality when The Big Bang Theory co-stars Cuoco and Galecki began dating in real life as their characters Penny and Leonard were dating on screen. After a two year relationship, they decided to go back to being 'just' friends in 2009. With the show about to start its 10th season, rumor has it that the on-screen couple might be getting back together in real-life, but we'll have to see about that.

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11 Celebrity Couples Who Broke Up While Working Together

NINA DOBREV AND IAN SOMERHALDER, 2010-2013

Elena Gilbert may have struggled in choosing between the Salvatore brothers on The Vampire Diaries, but for three years, Dobrev was team Somerhalder all the way. Their adorable off-screen relationship was #couplegoals for fans everywhere, but in 2013 they decided to part ways, the world was heartbroken, and they continued to work together on TVD until Dobrev left the show in 2015.

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11 Celebrity Couples Who Broke Up While Working Together

MICHAEL C. HALL AND JENNIFER CARPENTER, 2008-2011

The Dexter siblings definitely had some abnormal chemistry on-set, and so they went on to date in real-life. After marrying in 2008, the two ended up getting a divorce in 2011. But, they had to set it aside and keep up their contracts by continuing to work together until the show's end in 2013.

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11 Celebrity Couples Who Broke Up While Working Together

KRISTEN STEWART AND ROBERT PATTINSON, 2009-2013

The on-screen, off-screen couple started dating in 2009 while filming the Twilight movies. After several years of dating and a short-break up in 2012, they broke up for good in 2013, just before having to do press appearances together leading up the premiere of the last Twilight installment, Breaking Dawn Part 2.

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11 Celebrity Couples Who Broke Up While Working Together

JENNIFER LAWRENCE AND NICHOLAS HOULT, 2011-2014

The former couple met on the set of 2011's X-Men: First Class and went on to work together in X-Men: Days of Future Past (2014). After two years of dating, they shortly separated, then rekindled their romance in late 2013, only to split for good a year later in 2014. After breaking up, the two went on the film X-Men: Apocalypse together, which was released in 2016.

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11 Celebrity Couples Who Broke Up While Working Together

SOPHIA BUSH AND CHAD MICHAEL MURRAY, 2005-2006

Much like their One Tree Hill characters Brooke Davis and Lucas Scott, Sophia Bush and Chad Michael Murray were not destined for each other. The former co-stars wed in 2005 only to separate a short five months later. After the split, the former couple continued to work together on the show until the series finale in 2012.

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11 Celebrity Couples Who Broke Up While Working Together

BLAKE LIVELY AND PENN BADGLEY, 2007-2010

Taking a cue from their on-screen characters, the Gossip Girl costars' relationship heated up in real life, with Lively and Badgley dating for a solid three years while working together, too. Their romance ended in 2010, which must've made it super strange to not only continue working together but also to marry each other on the show during the final, 2012 season.

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11 Celebrity Couples Who Broke Up While Working Together

CHARLIZE THERON AND SEAN PENN, 2014-2015

Theron starred in the Penn-directed movie The Last Face, and the two were even rumored to be engaged before the actress called it quits (allegedly by "ghosting" him) in June 2015. One year later, they had to reunite while doing press for the film at the 2016 Cannes Film Festival.

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11 Celebrity Couples Who Broke Up While Working Together

DIANE KEATON AND AL PACINO, 1972-1989

Keaton and Pacino had a two decades-long on-again, off-again love affair during the '70s and '80s while starring together in the iconic Godfather trilogy. Allegedly, she wanted to settle down, but Pacino wasn't ready at the time, so they split up. Still, they worked together for about 20 years, having to continue their professional relationship while their personal one remained rocky.

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11 Celebrity Couples Who Broke Up While Working Together

RACHEL BILSON AND ADAM BRODY, 2003-2006

While filming The O.C., Bilson and Brody's professional relationship turned intimate. Fans thought their epic romance would never end, but the two celebs broke up after three years, in 2006, continuing to work together until the show's finale in 2007.

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11 Celebrity Couples Who Broke Up While Working Together