There was a lot of hype surrounding the sex scene in Breaking Dawn Part 1 and Bella and Edward will have another in the new film, this time as vampires.
Rob, 26, told Australian comedians Fitzy and Wippa he still gets awkward doing those scenes, which he says are "impossible to prepare for."
"I remember shooting it and it was one of the most embarrassing things I've ever done in my life because it's trying to shoot PG-13 stuff," Rob said about filming with on-again girlfriend Kristen Stewart, 22.
"So they decided to shoot close up to our faces, me and Kristen doing sexy faces to the cameras," Rob laughed. "Suddenly you get to a point where you're thinking 'This face is going to be on a cinema screen, people are going to watch it.'"
Awkwardness aside, fans should get excited: Rob said the scene is "better in this one" because "it actually works."
You can watch the entire interview here.
The Twilight Saga: Breaking Dawn Part 2 hits theaters on November 16.