Robert Pattinson and Kristen Stewart may be pretty closed off with their relationship and intimate details. However, when it comes to the power couple talking about nudity and sex on film, they can be very vocal. Kristen and Robert talk of sex, balls and nudity at the 2012 Cannes Film Festival.

"Twilight Saga: Breaking Dawn Part 2" will soon hit the theatres by November, which marks the end of the "Twilight" frenzy. Though the film is set for an end, Robert and Kristen's' film career continue to soar. In fact, both stars have already started with separate post-"Twilight" flicks.

Kristen Stewarts' highly awaited film, "Snow White and the Huntsman," will hit the theatres by June 1. It's obvious fans of Stewart are excited to see her medieval style, but it's Stewarts' other film, "On the Road", that has got fans in a craze. So what's the big deal with Kristen rocking out all stoned in the front seat of the car with two incredibly hot men?

"I genuinely did feel so completely comfortable that watching it now even I'm like 'Whoa!'" said Kristen in an interview with E! news regarding risqué scenes in the film, adding, "Which is fine, that's the way I should react to it. I'm so not like her, as I've said, but um..."

The first scenes surely have been awkward for Kristen, considering it was her first time to shoot with Garrett Hedlund. Yet, in earlier interviews Kristen did say getting nude was she "wanted to do".

"I love pushing myself. I love scaring myself. I've always wanted to get as close to an experience as I could," said Stewart.

As for Stewart's long time beau, Robert Pattinson, Rob too had his share of nudity for his film, "Bel Ami". It doesn't compare much to Robert's other film, "Cosmopolis". According to Robert, sex scenes for the film were "fun and exciting".

"At first, we were supposed to see us climax at the beginning of the scene, and then talk after. But David suggested that we talked while we f-ked," said Robert.

Getting down and dirty commando style wasn't the only thing Robert had to do for "Cosmopolis". David who directed the film wanted Robert to do practically crazy sexual scenes.

"Five minutes before we filmed, David told me 'I want to see the bottom of your balls on the top of the frame.' At the moment, I reminded myself that I would do anything for him. So I went back to see him and told him that wouldn't happen. He took it really well. At the start, it's a very bizarre scene that you won't see again in another movie, I promise," said Pattinson.

Showing off more than they should on film definitely proves Robert and Kristen's dedication to their film career. Fans have something else to look forward to in the "Robsten" duo's' films that is nothing compared to "Breaking Dawn".

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