Jaehyun has been your childhood bestie. He has known you since your freaking birth (not literally, of course). So that also meant you have been close for a very long time. You've always caused mischief as kids, and still do as teenagers. You're really comfy with each other, so you guys hug, cuddle, stay close and stuff. He has even pecked your forehead a few times. Some people make rumors that you both are dating and you guys are tired of it since you both never even thought of dating each other
One day, at school, you guys were really bored. His arm was wrapped around your shoulder and he was secretly using his phone at mute so the teacher doesn't catch him to cure his boredom. While you, were practically passed out (sleeping) on his shoulder because of how bored you were. Not until he suddenly but quietly nudged your shoulder to wake you up
He whispered to you "Heya, dummie. Wanna sneak out?" He asked mischievously