rob pattinson and kristin stewart play the unlikely lovers on-screen and off. >> was it weird having a wedding scene and then the intense honeymoon scenes with someone you're dating? >> that's funny to say. >> it would be weird. >> it would be, wouldn't it. >> more intense with someone you care about. >> it is always weird you know. >> not so weird for pattinson. he enjoyed watching his girlfriend walk down the aisle as a bride. >> when you saw kristin, what did you think? >> she's great. she's amazing. >> on film, their honeymoon is sweet and sexy. very sexy. >> about that sex scene, huh? >> it was good. it is a morality tale. you have sex. you have a demon baby. >> all jokes aside, the birth scene is nothing to laugh at. >> it is crushing you from the inside out. >> it could have been worse. in the book, it is grotesque. >> jay could be moved away from his past to protect bella but in real life, she is still at home. >> do your folks keep you grounded living at home? >> it is a huge help. >> the movie is the first half of the series. fans will have to wait until next year to see ho