Are MILEY CYRUS and NICK JONAS back together, after the couple were not only spotted enjoying a lunch date this weekend but also announced that Miley is going to be teaming up with the Jonas brothers to record a new song.

The 16-year-old singer/actress is vehemently denying they are back together after they split in 2007, saying that they are just best friends. "We aren't back together. I don't think people know how to make an ex-boyfriend into a best friend and it seems impossible. 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 know we are best friends.'"

We don't believe her...