Kate Winslet's Leonardo language

Britian's Kate Winslet poses after winning the award for Leading Actress during the 2009 BAFTA (British Academy of Film and Television Arts) awards ceremony at the Royal Opera House in London February 8, 2009. [Agencies]

Kate Winslet and Leonardo DiCaprio have their own "secret language".

The British actress has revealed the 'Revolutionary Road' co-stars developed a special lingo to help get them through challenging filming scenes.

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She said: "When we filmed difficult scenes we developed our own secret language of our own. With our history we could do anything without feeling stupid."

The 33-year-old actress - who has remained close to Leonardo since they starred in the 1997 blockbuster 'Titanic' - insists she trusts the 34-year-old actor implicitly, and would even let him hurt her if it improved a scene.

She said: "I would even let Leo physically harm me if it meant making a scene better, and I know he feels the same way. If we didn't have this rare friendship, I don't think we would be able to show that chemistry on screen."