Robert Pattinson Addresses 'Fifty Shades of Grey' Casting Rumors

Rumors hit the web recently that Robert Pattinsonwas "secretly gunning" for the role of Christian Grey inFifty Shades of Grey, and the Twilight heartthrob is taking them in stride.

"I am playing that part," Rob told MSN. "I also wrote the book."

The 26-year-old actor then erupted into laughter. His on and off-screen girlfriend Kristen Stewart also finds the Twilight fan fiction book funny.

"I've skimmed parts of it," Stewart said in an interview with Backstage. "When I read the first few pages describing her messy hair, I was like, 'This is so strange.'"

"But it's just so raunchy! I mean, obviously, everyone knows that. But when I see people reading it on planes and stuff, I'm genuinely creeped out," Kristen said. "Like, you're basically just reading porn right now! Get that blanket off your lap!"

Too funny!

For those fans secretly hoping Rob and Kristen may be up for the part sources tell Cambio that is "definitely not" happening.