When the tragic news of Cory Monteith’s death was announced, it was a tremendous loss felt by the entertainment world, especially by the cast of 'Glee.' Understandably, the loss of someone so vital to the show -- not to mention so beloved -- is something still felt by the cast and crew, and cast member Mark Salling opened up about it in an interview with PEOPLE.

Mark is returning to 'Glee' for the entirety of its final season, but he says things simply aren't the same without Cory: "[He] was a great leader as a character and person in real life. It's a big, obvious hole. I still think about him all the time."

Mark then went on to talk about how close to his character Cory was, at least in certain ways, saying, "He was kind of like the quarterback of the show, which sounds cliché because the [tribute] episode was called that, but he was kind of like that in real life."

He was also honest when asked if the final shows would perhaps provide some sort of closure for the cast and for Cory, saying: "I don't think there will be any closure. Not yet."

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