Hottie Robert Pattinson is glad he only signed up for one Harry Potter movie — because any more would have driven him “crazy”.  The hunky British star — who shot to fame as vampire Edward Cullen in the Twilight movie franchise — played Cedric Diggory in 2005’s Harry Potter and the Goblet of Fire. But Pattinson admits he wouldn’t have been able to cope with the grueling filming schedule if he had to make more Potter flicks.

“The Harry Potter I worked on took 11 months to shoot,” said the 23-year-old. “I don’t know how those guys have stayed sane doing it for 10 years. I would go completely crazy.” Pattinson recently revealed that he might quit acting! “I don’t even know if I want to be an actor that long,” he said. “I don’t even know how to be someone else… if I start doing lame work, I’m not going to stick around and do it!” Rob and his costars Kristen Stewart and Taylor Lautner are currently in Vancouver, Canada, filming Eclipse, the third Twilight movie.