While even the thought of Glee Season 5, Episode 3: “The Quarterback” — a tribute episode to Cory Monteith (Finn) who died unexpectedly this summer — makes us want to break down in tears, we can’t imagine how difficult it must have been for the cast and crew of the show to actually film the heart-wrenching scenes.

In a recent interview with E! News, Glee creator Ryan Murphy revealed Cory’s real-life friends and girlfriend Lea Michele (Rachel) had a very hard time shooting scenes that hit so close to home. Many people, Ryan shared, even had to leave the room when things got particularly intense.

“I locked [the episode] today,” show creator Ryan told E! News October 3. “It was incredibly difficult to work on. It was very difficult to shoot.”

“I’ve never seen a crew that you can’t continue shooting because they’ve left the room sobbing,” Ryan continued. “It was very hard… It was rough. It was very rough. It was very rough with Lea Michele… but I’m very proud of it. I think the performances are quite stunning. People still are not over it. It’s still very, very difficult.”

Part of the reason the tribute episode was so tough to shoot? Cory was one truly beloved cast member, adored by all who worked on the show.

“I mean, the interesting thing about that show is that those actors and the creators really, really loved Cory,” Ryan said. “The episode is called ‘The Quarterback,’ and you know Cory really was that, to that group of people and to me particularly. There was nobody on that crew that did not like Cory.”

Glee’s Cory Monteith tribute airs on Thursday, October 10, at 9 p.m. on FOX.

Source: E! News