'Glee' star enters rehab for the second time

For the second time in his life, 30-year-old "Glee" star Cory Monteith has checked into a rehab facility for substance abuse, People magazine reported over the weekend.

Representation for Monteith told People that he has "voluntarily admitted himself to a treatment facility for substance addiction," and asked that he be given privacy during this difficult time.

The Canadian actor, who plays Finn Hudson on the hit musical TV show, has been open about his previous struggles with drugs and alcohol, admitting to Parade magazine in 2011 that he had "a serious problem," noting that he "burned a lot of bridges."

"I'm lucky to be alive," he told the magazine. Monteith entered rehab at got sober at age 19.

However, it seems that he is again struggling with his demons -- but he's not going through it alone. Girlfriend and "Glee" co-star Lea Michele told People that she is "grateful and proud he made this decision."