Pakistan, Feb. 25 -- It's not too late to say sorry to Justin Bieber for speculating about his well-being. In fact, a rep for the "Yummy" singer-who shares son Jack Blues Bieber, six months, with wife Hailey Bieber-is firing back at claims that he's been using hard drugs, telling TMZ Feb. 23 that it's "absolutely not true."

Instead, his team notes, it's been a "very transformative" year for Justin as he "ended several close friendships and business relationships that no longer served him." And as the Grammy winner's 31st birthday approaches on March 1, he's focused on his family and his music, not speculation about his health, which his rep calls "exhausting and pitiful and shows that despite the obvious truth, people are committed to ke...