Bradley Cooper and Jennifer Lawrence Reunite on the Red Carpet

Jennifer Lawrence was joined by pal Bradley Cooper at the premiere of Serena on March 21. Photo: Getty

Bradley Cooper only just broke up with his girlfriend of two years, Suki Waterhouse.

But when he appeared on March 21 laughing it up with his frequent co-star Jennifer Lawrence at a screening of Serena in New York, he seemed back in his groove.

Jennifer Lawrence was joined by pal Bradley Cooper at the premiere of Serena on March 21. Photo: Getty

And what a familiar groove it is. The pair have previously worked their closeknit co-star magic in The Silver Linings Playbook (2012) and American Hustle (2013).The secret to their chemistry? "No sex!" joked Lawrence.

"I respect her so much as a professional, as an actor, and I think she's the best there is," said Cooper. "I just learn from her. You always want to work with people who are better than you."

"And I feel the same way about him," Lawrence added of her "work husband." (She has dated Coldplay's Chris Martin on and off since last year.)

RELATED: Jennifer Lawrence and Chris Martin Enjoy Romantic Date Night

Plus, "We're both two of the biggest eaters in Hollywood!"

The pair will reunite for a fourth time – yes, fourth! - in the upcoming Joy.