The first thing you need to know is that

You and Yeji are friends best friends that's why you told her everything one weekend you were at a sleepover it had gotten dark you had already brushed your teeth and everything but you couldn't sleep Yeji's parents went out for dinner for their anniversary they were alone you told Yeji that you liked someone and the next day the person you liked had a girlfriend and that happened every time you told Yeji who you liked that made you suspicious one day you told Yeji that you liked someone the next day you were walking with Yeji through the hallways of your school Yeji told you that she was going to the bathroom and you saw your crush pass by you became suspicious and you entered the bathroom and you saw Yeji that she was threatening your crush you didn't say anything and days went by

I don't know