Cory Monteith's Dad Says Son 'Should Have Known Not To Touch That Drug Again'!

This is just too tragic.

As the world prepares to cry its eyes out during tonight's Glee tribute episode, one man's heart may weigh even heavier than most — Cory Monteith's estranged father, Joe Monteith.

Joe recently admitted that, among other things, he never had a proper chance to say goodbye to his son.

When Cory died in July, it had been two years since he and Joe had seen each other, and they went 11 years before that without seeing each other.

Joe says the pain he's feeling now is "just ripping my insides out and tearing me apart."

He says when they last saw each other, Cory swore he was staying clean. Unfortunately, as we now know, that didn't last.

Joe continued:

"I lost my son. He should have known not to touch that drug again… I don't want to see any parent lose a child over heroin."

Joe also said he's very nervous about watching his son's Glee tribute, which is beginning to air right now, but that he hopes the show will take the opportunity to caution others on hardcore drugs use.

So do we.

Ugh. Absolutely heartbreaking.

Glee's Cory Monteith Tribute Episode Synopsis Surfaces; Find Out What's In Store For Finn Hudson's Final Good-Bye HERE!

The highly anticipated Cory Monteith tribute episode of Glee is only 2 weeks away…

The Quarterback, which is the official (and appropriate) title of the tribute, isn't airing until October 10, but the episode synopsis was released online today.

SPOILER ALERT!!! IF YOU DO NOT WISH TO READ ABOUT THE EP. BEFORE IT AIRS, STOP READING NOW!

Ch-ch-check out what the The Quarterback is all about, and how the students of McKinley will say good-bye to their old friend…AFTER THE JUMP!!!

"In the wake of Finn’s sudden death, former members of New Directions return to McKinley to remember their fallen friend. While a stoic Mr. Schue encourages all the gleeks to “memorialize him the way we do everything – by singing about it,” some of the kids find the exercise more cathartic than others. At the Hudson-Hummel home, Kurt, Burt and Carole sort through Finn’s belongings and what begins as a somber occasion blossoms into a poignant and much needed family moment. Meanwhile, Emma grows concerned when she believes Will is so busy taking care of others that he’s not allowing himself time to grieve; Santana struggles with using her “bitch” mask to hide her fond feelings for Finn, and has a run in with Bree, McKinley’s "New Santana"; and following a heart-to-heart with Coach Beiste, Puck honors Finn’s memory by making a life-changing decision about his future."

Get the tissues ready, because we already know the tears are coming!

Let's all prepare to say good-bye to Cory, the unofficial heart of The New Directions, one last time.