The Jonas Brothers have revealed some surprising influences behind new single LoveBug, while denying it is about Nick's ex Miley Cyrus.

The brothers wrote the song while on tour with fellow Disney star Miley, but the guys are not giving the game away about her influence on their lyrics.

Nick Jonas says, "Really, it's about just falling in love with somebody. And how if they break your heart - or however it ends - you think, 'That's it forever,' until the lovebug gets you again."

Miley and Nick dated last year but the boys insist the inspiration for the LoveBug came from the The Beatles and hit movie Juno.

Nick & Joe channelling their inner nerd for the LoveBug video

"The vision for the song actually came from some different inspirations," adds Nick.

"But Juno was one of our favourite movies at the time, and the soundtrack is always kind of odd, so we decided to put those elements in the song, and it came very nicely."

"I think there are a lot of things we draw from, but that song in particular is a Beatles influence."

See pics of the boys filming the video for LoveBug here