Robert Pattinson has admitted that he was uncomfortable when filming the sex scenes for Cosmopolis.
The actor says that he was no where near as relaxed as he female co-star when it came to one particular scene.
Speaking to Shortlist the actor said: "Oh man, I was terrified on Cosmopolis.
"There was a sex scene and I was cringing. The girl was really comfortable with her clothes off - and I'm not.
"She took all her clothes off and I was just sitting there going, 'Um, I haven't got my 'ball-sack' on...'. F**king amazing."
Pattinson teams up with director David Cronenberg for the first time for Cosmopolis, which played at the Cannes Film Festival last week.
This is the second movie of the year for Pattinson after he lead the Bel Ami cast. He will be returning to the role of Edward Cullen in the autumn for the final instilment of the Twilight Saga franchise.
Cosmopolis is released 15th June.
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