Jennifer Lawrence has said that she and Bradley Cooper are "work husband and wife".
The actors have appeared in a string of highly successful movies together, including Silver Linings Playbook and American Hustle and are currently promoting their latest film Serena.
Speaking at a screening of the movie in New York on March 22, Lawrence said she convinced The Hangover star to appear in the film.
She said: "I forced him to come onto [Serena]. I mean, any male role is going to make me think of Bradley because in my opinion, he's the best, and I love working with him."
When she was asked to reveal the secret behind their successful on-screen partnership she joked: "No sex!"
Cooper also gushed about his co-star, saying: "I respect her so much as a professional, as an actor, I think she's the best there is.
"I just learn from her. You always want to work with people who are better than you."
The Hollywood A-listers have reunited with their Silver Linings Playbook and American Hustle director David O'Russell for Joy which is currently in production.
