Long hours on film sets can sometimes lead to a lot more. Kristen Stewart is the latest star to turn a professional relationship into a personal one, shocking "Twilight" fans by admitting that she engaged in "a momentary indiscretion" with her "Snow White and the Huntsman" director, Rupert Sanders.
British tabloids are buzzing that the affair between the 22-year-old actress and 41-year-old married director was more than just a one-time thing. Producer Giovanni Agnelli, who worked with Stewart on the 2010 movie "Welcome to the Rileys," defended the actress on Twitter Monday, writing "the spin that keeps growing on this story is staggering. There was NO on set affair."
Nevertheless, Stewart's boyfriend, "Twilight" co-star Robert Pattinson, reportedly moved out of the home they shared in Los Angeles. According to People magazine, Stewart also left the house, and the two aren't speaking.
They'll have to reunite, at least on the red carpet, for the final film in the "Twilight" saga, "Breaking Dawn: Part 2," due out Nov. 16. Stewart may also be working with the man who came between them on the "Snow White and the Huntsman" sequel that Sanders has already been pegged to direct.
It's not the first time Hollywood has provided the stage for off-screen romance. Click through for six more couples that got together on set, controversially and conventionally.
LeAnn Rimes and Eddie Cibrian
LeAnn Rimes and Eddie Cibrian grew close while shooting the TV movie "Northern Lights" in 2008. The relationship turned romantic, and they made headlines in 2009 when they both divorced their spouses to be together.
"I take responsibility for everything I've done," Rimes told People magazine in 2010. I hate that people got hurt ... But I don't regret the outcome."
Brandi Glanville, Cibrian's ex-wife, recently tweeted about the Stewart-Sanders affair and compared it to her own drama. "I'm not happy with this K stew BS," she wrote. "2 close to home.Same story,friends with the wife and kids& f**k the husband wen we think no one is looking." In a separate tweet, she added, "Home-wreckers come in pairs #ittakes2."
Kelly Ripa and Mark Consuelos
Before Kelly Ripa paired up with Regis, she was paired with her future husband Mark Consuelos on the ABC daytime drama, "All My Children." Consuelos played Ripa's onscreen lover Mateo Santos. But apparently sparks continued to fly offscreen as well. After a year of dating, Ripa and Consuelos eloped in Las Vegas in May 1996. In June 1997, they welcomed their first child Michael Joseph, followed by Lola Grace in 2001 and Joaquin Antonio in 2003.
Brad Pitt and Angelina Jolie
By now, everyone knows Hollywood's most famous couple, Brad Pitt and Angelina Jolie, met in 2003 on the set of "Mr. and Mrs. Smith," in which they played married assassins. Pitt was married to Jennifer Aniston at the time, and though Jolie has maintained she remained just friends with Pitt until his marriage broke up in 2005, sparks were clearly flying on the set. "I think a few months in I realized, 'God, I can't wait to get to work,'" she told Vogue in 2006. Parents to six children, the pair are now engaged.
Will Smith and Jada Pinkett Smith
Before she became Will Smith's real-life partner, Jada Pinkett Smith auditioned to be his girlfriend on "The Fresh Prince of Bel-Air" in 1990. She didn't get the gig -- she was considered too short, so the role went to actress Nia Long -- but she did get the man, and the wedding ring in the end. Will and Jada stayed friends and began dating in 1995. They married in 1997, and have two children, Jaden and Willow, who are following in their famous parents' footsteps.
Anna Paquin and Stephen Moyer
Anna Paquin and Stephen Moyer began dating soon after their HBO show "True Blood" debuted in 2008 and they shared their first on-screen kiss. They kept their relationship under wraps, though, finally announcing their engagement in August 2009. Married a year later, they are now expecting their first child in the fall.
Jennifer Garner and Ben Affleck
You'd think Ben Affleck would have shied away from dating his co-stars after his "Gigli" disaster with then fiance Jennifer Lopez. Instead, Affleck began dating another Jennifer -- Jennifer Garner -- after they played comic-book superhero lovers in 2003's "Daredevil." The pair made their first public appearance as a couple attending the Boston Red Sox's opening World Series game in October 2004. They married in 2005, when she was pregnant with their first child. She recently had their third child.