"I'm in a business where, as you can imagine, I'm surrounded by the gay community. I mean, that's just my life," he said. "The truth is, I don't think I could've given them as much joy as they've given me."
Buble also discussed how his first fan in America, Johnny Blue Note, was "my foray into my relationship with the gay community and me as an entertainer."
Among funny anecdotes about his first meeting with his wife (who also thought he was gay at first), the singer spoke soberly about tolerance. "I'm killed, just devastated, when I hear people saying [LGBT people] 'choose.' 'Choose'? What are you fucking talking about? You don't choose. It isn't a choice," he said.
Buble isn't worried about losing fans over his staunch support of the LGBT movement; what matters most to him is that his two sons know where he stands. "Years from now, when my kids grow up and they read this, they're going to be proud of their father because their father was on the right side of the line."
His new album, Nobody But Me, is available now on iTunes.