Justin Bieber and his wife, Hailey Bieber , aren’t shy about their relationship on social media; The couple is constantly letting their fans know how much they love one another with pictures, PDA, and comments on one another’s photos--but over the weekend, Justin took things to the next level.On Sunday, December 27, the “Yummy” singer posted a video of himself preparing for his upcoming New Year’s Eve performance, singing his heart out in a dimly lit room.