THIS IS NOT MY BOOK!!! I HAVE NOTHING TO DO WITH THIS BOOK!!!! The original book Twist and Shout by the author from achiveofourown (Gabriel (AO3)) ALL THE CREDITS GOES TO GABRIEL AND STANDBYME!!

Dean and Cas have been dating for a while now, secretly, but what will happen when Cas' mom and Dean's dad gets married and they become stepbrothers?