"Is Robert Pattinson's sex appeal so utterly overwhelming that he's capable of destroying relationships just by co-starring with someone? 
The New York Post reports that Uma Thurman, who's scheduled to share the screen with Pattinson in the upcoming romance flick Bel Ami, has split up with her fiancé, hedge fund manager Arki Busson, making Busson the latest in a long line of victims of what many (okay, so far, "we") are calling The R-Pattz Co-Star Curse.
The earliest recorded instance of The R-Pattz Co-Star Curse (copyright pending) occurred early this year, when Gentlemen Broncos actor Michael Angarano, who had been dating Pattinson's Twilight co-star Kristen Stewart, suddenly disappeared from Stewart's life with the swiftness and completeness of a Soviet dissident.
Robert Pattinson on the set ot "Remember me", June 2009.
But this was just the beginning of R-Pattz's relationship-wrecking streak. Back in June, as she prepared to film the romantic comedy Remember Me with Pattinson, Lost star Emilie de Ravin announced that she was parting ways with her husband of three years, December Ends thesp Josh Janowicz. And thus, a pattern emerged.
If we were The Wrestler director Darren Aranofsky—who's engaged (for now anyway) to Rachel Weisz, who'll be co-starring with Pattinson in the upcoming historical drama Unbound Captives—we'd be pretty worried right now.
Natalie Portman and Darren Aronofsky on the set of 'The Black Swan', on 8th December 2009, shooting in Lincoln Center.Then again, given that Aranofsky is currently preparing to film an angry, aggressive sex scene between Natalie Portman and Mila Kunis, he might have already mentally checked out of that relationship". Source: www.celebuzz.com