AceShowbiz -

Asked by In Touch Weekly to spill the bean on the thing that makes her relationship with current boyfriend Joe Jonas works, Camilla Belle says the secret to keep their romance hot and heavy is honesty. "I think in any relationship, honesty is key. Honesty is the number 1," said the actress while attending the Whitney Art Party in New York on Wednesday, June 17.

On the same occasion, Camilla also played down persistent rumors of her having an affair with Robert Pattinson. "We've been friends for a long time," she insisted. Addressing on the fact that she was seen hanging out with the actor in the Big Apple's Bowery Hotel prior to the fashion affair, she said their relationship is "platonic."

On screen, Camilla Belle can next be seen starring in drama movie "After the Wedding." The film, which teams her up with Tom Wilkinson, hasn't had a release date just yet. Most recently, Camilla was seen starring in "Push".