'Glee' star Cory Monteith has revealed he had an 'out of control' drug habit that ended with him in rehab. The 29-year-old has opened up about his battle with drugs and said he started drinking and smoking pot at the age of 13 and he then ended up dropping out of school and was in rehab at 19. He told Parade: "I burned a lot of bridges." Monteith, who plays Finn in the US TV series, said he did "anything and everything, as much as possible ... I had a serious problem". Pictured: Cory Monteith Splash News and Picture Agency does not claim any Copyright or License in the attached material. Any downloading fees charged by Splash are for Splash's services only, and do not, nor are they intended to, convey to the user any Copyright or License in the material. By publishing this material , the user expressly agrees to indemnify and to hold Splash harmless from any claims, demands, or causes of action arising out of or connected in any way with user's publication of the material.