more than buddies

Re and Xi are friends from middle school they're are in 2nd year of high school. They're friendship is like early spring a little breezy but bright and cheerful. They understand each other more than they understand themselves. But their feelings for each other are like the first cherry blossom leaf one can't catch it and it eventually falls on the ground, in vain. They have feelings for each other but doesn't realises it. They have been all flirty with each other but one couldn't understand the butterflies he has been feeling lately bcuz of specific someone.