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."
Winslet, who won the Leading Actress gong at the recent 2009 BAFTA ceremony, further added that she would not mind even if her Revolutionary Road co-star left her with bruises. 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."