EXCLUSIVE: 'This is Us' Star Milo Ventimiglia Gives Major Clue About Jack's Death

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We’re still recovering from this week’s This Is Us fall finale, and now star Milo Ventimiglia has us even more emotionally rattled. Apparently, when we find out how his character, Jack, died, it’s going to be a doozy.

“It’s going to hurt,” he told ET at GQ’s Men of the Year event at the Chateau Marmont in Hollywood on Thursday night. “It’s going to hurt real bad!”

The actor says we won’t find out how Jack died anytime soon though. “I think it’s going to be a ways off,” he promised. “You’re going to forget about it, you're going to get wrapped up in the lives of Jack and Rebecca and the big three, and then when you've forgotten that he's gone, we're going to hit you with it and it's going to crush you.”

Pass. The. Tissues. Please!

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Ventimiglia, who was sporting Jack’s signature ’stache at the event, said he’s known about his character’s death since the pilot. “Going into this show I knew that my character was always going to be past and I was OK with it,” he shared. “Dan Fogelman, our creator, he was like, ‘Milo, you're not going anywhere.’ I'm like, OK, great!’”

The actor and his co-stars have grown incredibly close. Also on Thursday night, Justin Hartley told ET the cast is “like a family,” and both men shared their support for co-star Chrissy Metz, who has revealed she’s undergoing a weight-loss journey both on the show and in real life.

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“She’s beautiful to me outside and inside,” Ventimiglia said. “She's just such a deeply soulful woman, a beautiful spirit and beautiful woman, you know?...There's this great representation of this swath of people that our show displays and the inclusive nature of it, and I think for Chrissy to be open about her weight, it's beyond brave. It’s exceptional to be able to stand up and say, ‘Hey, this is who I am and I hope I inspire people.’”

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The star also celebrated the show’s Critics Choice nomination for Best Drama Series. “What wonderful company to be in with all the great nominees,” he said. “To be recognized by a group of people that day in and day out are really watching for nuanced stories and character…it's deeply humbling.”

This Is Us returns to NBC on Jan. 10. To relive the moments that have sent us into emotional breakdowns already this season, watch the video below.