A close friend your age
해체(반말)
Close friends born in the same year talk in banmal, the casual style. Using haeyo with a close friend would feel distant, almost like you're upset.
Common mistakeSwitching to haeyo when you're annoyed. Friends hear the sudden politeness as a cold shoulder.
Examples
밥 먹었어?
bap meogeosseo?
Did you eat? (a common way to say hi)
내일 뭐 해?
naeil mwo hae?
What are you doing tomorrow?
고마워!
gomawo!
Thanks!