Robert Pattinson Wasn't "Acting" in 'Breaking Dawn' Sex Scene: It Was "A Piece of Cake"

Expectations are very high for the big Twilight Saga: Breaking Dawn — Part 1 sex scene, but star Robert Pattinson isn't worried about his performance.

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Rob admitted that, yes, both he and Kristen Stewart felt the pressure from Twi-hards.

"Yeah, but at the same time no. That's the one time where I have felt kind of like the coolest person," Rob said with a laugh to MTV News. "This is easy!"

What was so easy exactly?

"I can fulfill people's sexual-fantasy expectations without even thinking about it, piece of cake," he joked. "That isn't acting."

We can't wait to see for ourselves on Nov. 18!

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Watch a clip of Rob's interview below!