Tribute to 'Glee' Star Corey Montieth

Girlfriend and co-star Lea Michele speaks out about the heartbreak of losing someone to addiction.
2:12 | 08/12/13

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Transcript for Tribute to 'Glee' Star Corey Montieth
There was an emotional tribute to cory monteith last night. Of course he is the young tv star who sang those innocent songs on "glee" while battling a heroin addiction. The tribute came from his girlfriend and costar, lea michele. Her words reached right into a lot of families grappling with addiction. Reporter: It was her first televised appearance since her "glee" costar and real life boyfriend cory monteith was found dead of an overdose last might month. As she took to the stage at last night's teen choice awards, she fought back teers. For all of you out there who loved and admired cory as much as I did, I promise that with your love, we're going to get through this together. Reporter: Monteith was just 31, a life cut short by a deadly mix of heroin and alcohol. ♪ I just can't stop loving you ♪ ♪ I just can't stop loving you ♪ Reporter: The star's struggle was public. He started using around age 12 and did two stints in rehab. This is the most repreventable cause of death. Addiction special lists say friends and family can make all the difference. Starting a conversation may just save a life. Here are some tips. Gather evidence of drug use and anticipate denials. When people are high, they're less likely to understand and more likely to be angry. List the behaviors you've witnessed. And if you're staging an intervention, bring a doctor or an addiction specialist. Have the talk when the person is clear headed and sober. The addict is more likely to be remorseful and preflektive when they remember. Could these deaths have been prevented. You can't lay on the responsibility on the loved ones. Ultimately it's still the patient's responsibility to get health. ♪ he became a part of all of our hearts and that's where he'll stay forever. Thank you guys so much. Thank you. Reporter: Cecelia vega, abc news, los angeles.

This transcript has been automatically generated and may not be 100% accurate.

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