English actresses Keira Knightley and Sienna Miller bonded on the set of their 2008 movie THE EDGE OF LOVE by playing games and learning musical instruments together.
The stars play two lovers of poet Dylan Thomas in the period drama, but Miller insists they were anything but rivals off set, and devoted hours to their mutual love of "nerdy" pastimes.
The 27-year-old tells Starpulse.com, "I mean, we're quite nerdy. We talk about books and we play cards and do The Guardian (newspaper) crossword. We were living together in this house in Wales that was really beautiful and we all sort of walked around in our pyjamas and went for long walks."
Their friendship has continued long after shooting wrapped on the movie - and the two actresses are now spending their time together inspiring each other to learn new skills.
Miller adds, "She's (Knightley's) learning the flute at the moment, I'm learning the piano, quite nerdy. I used to play the piano when I was younger and I'm kind of now going back to it, but I can't read music, so I play it by ear. I need someone to play it, so it's a little complicated to do on my own, but it's fun."