CORY MONTEITH 'Glee' Tried to Save Actor from Heroin Addiction

The cast of "Glee" -- along with several producers -- knew Cory Monteith was battling a heroin addiction earlier this year and were the catalyst in his decision to go back to rehab, TMZ has learned. 

Sources connected to the production tell us ... it was no secret Monteith was off his game back in March -- and it became clear he was relapsing, specifically with heroin. 

We're told the cast and the producers became very concerned ... and knew they had to address the issue with Cory. 

Sources say ... the group sat down with Cory and had an "open conversation" with the actor -- stressing how much they cared about him and wanted him to get help. 

One source tells us Cory was very receptive -- "It wasn't met with resistance ... He was always so grateful and aware of how fortunate he was."

"The decision was to best help our friend. The needs of the show fell second to his well-being."

Cory voluntarily checked into rehab at the end of March for a 30 day stint ... but despite his efforts, he couldn't defeat his demons, and last week, he died from a lethal mixture of heroin and alcohol. 


NEWS SOURCE:http://www.tmz.com/

CORY MONTEITH DOUBLE LIFE Sober for 'Glee', Wild in Vancouver

Cory Monteith was leading a double life -- a hard-working, "Glee" star in L.A. struggling to stay clean ... a hard-partying substance abuser in Vancouver.

CORY'S L.A. LIFE

Our sources say Cory's GF Lea Michele and his "Glee" cast knew his struggles all too well and spent a lot of time keeping him clean and sober.  We're told Cory never showed up on the set under the influence of anything and most of the time abstained from drugs and alcohol.

The pic above shows the last trip Cory and Lea took together -- it was taken on June 18th in Fire Island, where they visited a friend on a movie set.  We're told Cory was sober the entire time.

There were, however, lapses, which is why he checked into rehab in April.

CORY'S LIFE IN VANCOUVER

Our sources say Cory's resolve to stay clean dissipated whenever he returned to h
is native Canada.  That's where he became a drug addict with a serious drinking problem.

Corey went back to Vancouver many times, and hung out with many of the friends who helped fuel his addiction.  We're told alcohol and drugs were always involved.  

Our sources say Cory's family was aware he reverted back whenever he went North of the border, and they tried in vain to help.  We're told as family members became alarmed recently and began making a full-court press ... Cory became distant.

Somehow, Cory was able to compartmentalize his life into a tragic tale of 2 cities ... and the city where he slipped became the city where he died.
NEWS SOURCE:http://www.tmz.com