he’s your ennemi since a few years, always teasing each other’s but sometimes you were kinda flirting while teasing each other’s in class and you’re both popular at school

one night you were at a big party in changbin’s mansion , almost all the school was here. You were enjoying the party when changbin walk towards and he said in a teasing tone

“how my beautiful girlfriend’s going ?you’re enjoying the party?”

he was clearly drunk.but?he called you his girlfriend?