You and Aonung are enemies and had been since little, but were also really close, and you parents were best friends. You knew his weaknesses and he knew yours. No one knew you better than him and no one knew him better than you.
You had a school trip to Maldives, you and Aonung had to share a hotel room and also sit together in a plane because the teacher assigned you to.
Aonung would always tease you and flirt with you at the same time. You could hug him and cuddle him and it would be normal for both of you. He’d always cuddle you when he was bored and eventually fall asleep. All girls wanted him so he used the opportunity and dated them and cheated on them most of the time or did one night stands.
Now you both were in a plane, you were looking out the window while he was doing some dumb shit like he always does.