Four years after heroin and alcohol killed him, Cory Monteith is being remembered by those who knew him best

SANTA MONICA, CA - AUGUST 19: (L-R) Actors Lea Michele and Cory Monteith attend the 2012 Do Something Awards at Barker Hangar on August 19, 2012 in Santa Monica, California. (Photo by Christopher Polk/Getty Images for VH1)

Some former “Glee” castmates of Cory Monteith have paid tribute to the late actor on the fourth anniversary of his death.

Lea Michele posted a picture of herself with Monteith, whom she also dated, on Instagram on Thursday with the caption, “4 years and it still feels like yesterday.. love you more C.” Actress Dianna Agron did the same, calling Monteith a “wonder human.” She writes, “I miss every bit of you.”

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Monteith was found dead in a Canadian hotel room on July 13, 2013. A coroner’s report blamed the 31-year-old’s death on a fatal dose of heroin and alcohol.

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