But before you ~completely~ freak out, they only parted ways for a week. Phew!
In their most recent video, our fave YouTube brothers Ethan and Grayson Dolan reveal that they've literally never been apart for longer than a day, maybe even only "19 hours, tops."
Which is why they decided to try to go a week without each other by flying to opposite sides of America and cutting off ALL forms of communication. They chose their destinations by throwing darts at a map blindfolded, with Ethan heading to Colorado and Grayson to Hawaii.
So how did they go? "We decided to see what life would be like without our twin by our side," they captioned the video. "We quickly learned that it sucks."
From snowboarding and going to the beach alone, the boys made the most of their separate trips but they could NOT wait to see each other again. And their emotional reunion is EVERYTHING.
"That was f**king weird," Ethan dished, with Grayson saying, "I'm never doing that s**t again. I felt lonely and bored."
But what really hit us right in the feels was their final thoughts on the whole experience. "I can't really think about it. It's just this inner weird, uneasy feeling," Ethan explained. "You're kinda empty," Grayson added.
NAWWWW!!! We bet they'll never spend another second apart ever again!