Teen star Miley Cyrus has insisted that she and ex-boyfriend Nick Jonas are just ‘best friends', quashing rumors that she has revived her romance with Jonas. Speculation about the couple, who split in 2007, began to brew earlier this month when Cyrus teamed up with the Jonas Brothers to record a new song. The 16-year-old singer-actress, currently dating model-singer Justin Gaston, was subsequently spotted enjoying a lunch date with her ex, reports contactmusic.com. But Cyrus is adamant she is not reviving her relationship with Jonas, insisting they have just remained good pals since the split. ‘We aren't back together. I don't think people know how to make an ex-boyfriend into a best friend. But when you have known each other as long as we have - we did have such a great relationship. Even he has said, ‘We don't know what will happen in the future but for right now, we are best friends,' she said.