Rascal Flatts teamed up with Justin Bieber. No, it's not a joke.  The result:  "That Should Be Me" - the new song  was just released to iTuenes yesterday.  The song is about seeing an ex with someone new.  When I first heard about this I was skeptical, but it's actually not bad. You can get the full story and hear the song now at tasteofcountry.com