In an interview with GQ Australia published Tuesday, the actor, 32, spoke about filming the highly-anticipated conclusion to the popular HBO series and how the show, which he's starred in since he was 24, has changed his life.
He told the mag: "The last season of 'Thrones' seemed to be designed to break us."
"Everyone was broken at the end," Harington said. "I don't know if we were crying because we were sad it was ending or if we were crying because it was so f--king tiring. We were sleep deprived. It was like it was designed to make you think, 'Right, I'm f--king sick of this.'"
He continued, "I remember everyone walking around towards the end going, 'I've had enough now. I love this, it's been the best thing in my life, I'll miss it one day -- but I'm done.'"
Season 8 of "Game of Thrones" doesn't premiere until April, which unfortunately feels so far away.
Harington admitted to GQ that even he was shocked by the show's success in the beginning.
"After the first season I would say to people, 'We definitely won't get a second season,'" he said. "Then after the second season I went, 'Definitely not a third, no.' Everyone was, like, 'Are you f--king kidding me, Kit? Of course we're gonna get a third.'"
Matthew Brookes/GQ AU
Harington, who plays Jon Snow in the show, met his now-wife Rose Leslie while filming Season 2. The couple married at a star-studded wedding in Scotland in 2018.
"A lot of people meet their other halves at work," he said of meeting Leslie. "Our work just happened to be this iconic TV show."
Harington also opened up to the publication about his desire to move beyond the celebrated series and venture into other directions with his acting career.
"That weight is off my shoulders," he said of the final season. "It's done now. I can be proud of it. We've got eight seasons, and they can sit ona bookshelf at home 'til the end of time."
"It dawned on me, recently," he added. "And I have no idea if we will, but say me and Rose do have children. They'll know. They'll be able to see the genesis of their parents getting together. Which is quite a wonderful thought, really."
Harington concluded, "I thank the show for everything. But more than anything else, I thank it for introducing me to her."