London: Actor Robert Pattinson says he hopes the intimate scenes between him and his real-life girlfriend Kristen Stewart in 'The Twilight Saga: Breaking Dawn - Part 1' don't disappoint fans.

Pattinson, 25, who plays the character of Edward Cullen, is nervous about how it is received because of the expectations fans of the franchise have for the encounter, Contactmusic reported

Referring to the original novel written by Stephenie Mayer, he said, "It's funny, people talk about intimate scenes in the book but there aren't actually any. It's all in people's imagination. They're like, 'It's so hardcore.' But it always fades to black. It just shows bits of the aftermath.

"[But] you have to show something! You can't fade to black in the movie because people would go insane! It's strange trying to do a singular event which everyone is expecting. Hopefully it'll be good. There's so much hype. You're like, 'God, I hope this lives up to it!'," he said.

However, it is not the only scene Pattinson is nervous about. Stewart's character Bella eventually gives birth to a half-human, half-vampire baby with gory results and the actor says the on-screen labour were "horrible".

"It was horrible. Insanely graphic and the most nerve-wracking thing about the whole shoot!," he added.