Justin Bieber’s fans noticed his unusual social media activity. Beiber has been unfollowing and blocking famous folks without any explanation, and the public continues speculating about his behavior.

Justin Bieber has unfollowed Usher - once described as a close friend and mentor to the Canadian - on Instagram, perhaps suggesting a souring of relations between the stars, both of whom were formerly

Despite unfollowing past acquaintances, including his former manager Scooter Braun and mentor Usher, Justin Bieber continues to follow Diddy on Instagram