Not a friend – What do I call her as?

Christmas Eve at the age of 21. ‘Geonwoo’, who is single this year again as always, didn’t think much about his childhood friend, ‘Haru’s suggestion on spending the eve together. “Do you… remember when we said we should help each other out if we were still single when we’re 22 years old? A racy one piece of the female friend looks different, it actually looks…