The pair became very close on-screen for season two of the show, causing the internet to fall in love with them, and honestly, if you thought they were cute on the show just wait 'til you see how they treat each other IRL.
They just sat down with GLAMOUR magazine, and spoke about their newfound friendship.
"I love it, but I didn't see it happening," Gaten admitted. "It was always supposed to be a joke, like, 'Aww, that will be cute,' but then [the characters] actually connected."
"We didn't even know we were working together until halfway through shooting," Joe added. "I saw [Gaten's] work last year and loved it and was really excited to work with him more. I thought our scenes were going to be pretty funny, but they had heart to them too."
Just watch the Intimacy Exercises they did below:
As for their fave scene together?
"The railroad scene!" they said in unison. "It was so much fun," Joe explained. "It was also the first time having almost three pages of dialogue."
However fans favourite scene between them was definitely the Snow Ball scene, when Joe dropped Dustin off and helped with his hair.
"I think I maybe saw a photo of his hair first [before I saw him in person]," Joe revealed. "I was like, 'Welcome to the club!' I was into it! I was impressed. He got more volume than I'll ever even get close to."