Robert Pattinson was nervous about his sex scenes with Uma Thurman in new movie 'Bel Ami'.

The hunky 'Twilight' actor gets hot and steamy with the screen beauty in the film - in which he plays Parisian journalist Georges Duroy - but insists it was far from erotic because of the movie's plot.

He said: "The sex scenes with Uma are kind of disturbing.

"Her character Madeleine kind of uses sex as a sort of weapon and my character thinks like an animal. There are a lot of sex scenes in this film, so I'm asking quite a lot of myself, and with lots of different people as well."

The movie is a big screen adaptation of French author Guy de Maupassant's 19th Century novel 'Bel Ami' in which ambitious young Georges sleeps his way to the top.

Film fans may also see Pattinson get steamy with Christina Ricci and Kristin Scott Thomas, who both star as Clotilde and Virginie respectively.

The 23-year-old actor also revealed he is waiting to find out when new the next 'Twilight' movie 'Breaking Dawn' will start shooting.

Pattinson - who plays vampire Edward Cullen in the 'franchise - added to the Daily Record newspaper: "It will be strange but it will be great just to be able to know what I'm doing.

"Not knowing when 'Breaking Dawn' is going to shoot - because it changes all the time - is a kind of burden, to have this thing where you don't know when it's going to happen.

"So you've got to organise everything in your life around that and that can be difficult."