Kristen Stewart says New Moon "the scariest thing"

Kristen Stewart says filming New Moon was "the scariest thing". The actress has revealed shooting break-up scenes with co-star Robert Pattinson was terrifying because she felt under pressure to please fans of the vampire franchise. Speaking about her character Bella's split from vampire Edward, Kristen said: "That was the scariest thing. I was almost as worried about messing it up than I was about thinking about the issues that Bella is dealing with. "I know what's it like to get broken up with but I don't know what it's like to get broken up with by a vampire who I've now been physically and chemically altered by. Suddenly you take an addict, you take whatever they're addicted to away from them and there's withdrawal. "So that was the most intimidating scene in the entire movie. I don't know how to explain how I did it." Kristen also confessed she was anxious about having to ride a motorbike for the second movie in the series. The 19-year-old beauty admits she had to be towed along for the scenes. "I'm definitely never going to be a biker," she laughed at a Los Angeles press conference. "The idea of riding, I mean I'm scared of cars so the idea of riding a motorcycle is just never going to be something that I'm into. I was towed ridiculously. I was on the back of this truck and I probably looked funny doing it." Meanwhile, Robert - who is rumoured to be dating Kristen - has revealed he spent a year drinking heavily before he landed a role in Twilight. The 23-year-old heartthrob told TV show Extra: "You realise very quickly, you can't drink beer and go to the gym. It doesn't make any difference."