저기요 I dont wanna be mean but most of your 질문 are meaningless....Justin bieber, taylor swift, Demi lovato and now the Jonas?! Seriously it's only gonna cause fights, not everyone on here will agree with and u'd ended up being dissed.
And no i don't know that song, I don't like them, sorry.
Hmm...I don't know why, but I like Big Time Rush better..(gah! I know its unrelated, I was just listening to their songs earlier..). I'm not a Jonas Brothers fan, but I kinda like this song :3 Its not too bad. I like the lyrics.