Robert Pattinson can't remember his lines.

The 'Twilight' actor says he needs someone on set to help him with scripts because he has such a poor memory.

He said: "When we do 'Twilight' there is always someone there who takes care of everything and feeds you your lines. I read a lot on set, but as soon as I shut the book I can barely remember the last line I've just read."

However that i not working on the set of his new movie the 'Bel Ami' with Uma Thurman and Christina Ricci, because director Declan Donnelan expects his actors to memorize all their lines like stage actors.

Pattinson told Germany's 'Focus' magazine that this presents problems : "We're just shooting 'Bel Ami' and Declan Donnellan is directing it. He usually does stage productions and expects me to know all of my lines - like a stage actor.

"No chance! I realised how rusty and slow my brain has become."

Pattinson also says the sex scenes in the movie are intense
He said: "The sex scenes with Uma are disturbing. Her character uses sex as a weapon and my character thinks like an animal."

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