But if it were up to Robert Pattinson, who plays Bella's husband Edward Cullen, the bedroom action would get even wilder.
"I would put [the sex scene] the last day of the schedule," he told BBC Radio 1 of his fantasy turn in the director's chair. "[I'd] say, 'Listen, I've got to have a closed set. It's really, really important. No one can see the monitors or anything,' and then just put like a walrus in or something."
Jokes aside, it's not so sexy puckering up in front of the cameras.
"Kissing is harder than love-making scenes, I think," Pattinson, 26, says. "You can't kiss like normally you'd kiss."
Adds The Twilight Saga: Breaking Dawn – Part 2 star, whose movie arrives in theaters Friday: "You got a one in three chance of smashing someone's tooth out."