Justin Bieber, 27, got very candid about his marriage to supermodel Hailey Baldwin in a new interview with Billboard. The “Lonely” singer wasn’t shy about revealing just how much Hailey has changed his life, and what an important role she’s played since they said ‘I do’ two years ago. “One thing that has been so helpful is my wife is so by the book,” Justin, who referred to Hailey as “babe” throughout the interview, revealed. “She’s so structured and routine and so responsible.”