Taylor Lautner and Robert Pattinson revealed all at Comic Con.
We have a great video of them talking about New Moon, comparing it to Twilight and telling us what their favourite scenes were.
If you would rather read their answers feel free...
Taylor Lautner: "I thought they did a pretty good job with the wolf transformation. I'm excited that there's werewolves involved now because the werewolves definitely step up the action in the movie. There's double the action in this movie than there was before.
"There's also a double dynamic. There's not just this romance between a human and a vampire. It's the beginning of a love triangle.
Robert Pattinson: "It wasn't just the director that made this one different. It was different because we kind of knew what animal we were dealing with now and I was much more a supporting role in this one. I started three weeks after we started shooting and my first scenes were the apparition scenes which involved me doing maybe one word a week.
"I had a pretty much stress free job of three months. It was great for me. All the pressure was on Taylor.
Robert Pattinson: "I think my breakup scene was my favorite scene. Hopefully it will come off as having quite a few more levels than the relationship in Twilight. I hope - it was interesting. It's a five page long dialogged scene (which is more than I ever had in the first one.)
"It's an interesting moment that completely bypasses all the supernatural elements of the story as well.
Taylor Lautner: "My original favorite scene was this really small scene. I just thought it was kind of cute. It was the scene where I walk her up to her door and say goodbye to her and I'm going off to fight in the woods and she's worried, she's scared for me. I thought that was kind of cute. I also like the breakup scene.
Kristen Stewart: "Yeah, that's my favorite scene. We call it a breakup scene because he basically tells her they can't be friends anymore and he's transforming. If you ever, ever treated me like that, you'd kill me."