"Glee" star Cory Monteith is heading to rehab. In a statement, Monteith's rep confirmed on March 31, 2013 that the actor has "voluntarily admitted himself to a treatment facility for substance addiction. "He graciously asks for your respect and privacy as he takes the necessary steps towards recovery." This is not the actor's first time in rehab. He got treatment when he was 19 and previously has spoken about his addiction struggles.