Cory hit superstardom in 2009, when ‘Glee’ premiered on FOX. Sadly, the actor reportedly had a tough time adjusting to the spotlight and it may have led to his untimely death.

Before his sad and sudden death from a lethal combination of heroin and alcohol on July 13, Cory Monteith was very vocal about his struggles with substance abuse. However, there was another struggle Cory reportedly endured, but he kept it a secret.

Cory Monteith Struggled With Fame — Inside ‘Glee’ Actor’s Other Struggle

“Fame was hard for him,” a friend of Cory’s tells PEOPLE. “It was something he knew he deserved but somehow he never quite knew how to handle.”

Cory, 31 at the time of his heartbreaking death, and much of the young cast of Glee reportedly engaged in a lifestyle that comes with being young, rich and famous.

“They worked hard and partied hard,” a Glee source says. “These aren’t high school kids. They are adults who enjoyed the perks of fame.”

Cory Monteith’s Behavior On The Set Of ‘Glee’

Despite his behavior off-set, Cory was reportedly respected for his professionalism on-set.

“I never saw him come to work late, lose his temper, not know his line or argue with crew and castmates,” says another show source.

What do YOU think, HollywoodLifers? Do you think fame can affect a person?

Watch: Cory Monteith Autopsy: Fatal Mixture Of Heroine And Alcohol 

— Chris Rogers
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@ChrisRogers86

More Cory Monteith Death News:

1. Cory Monteith Died From Mix Of Heroin & Alcohol — Coroner’s Report
   
2. Cory Monteith Hung Out In Known Drug-Filled Area Of Vancouver In Days Before Death
   
3. ‘Cory Monteith Was An Absolute Inspiration,’ Movie Producer Says