When you were little, you and Taejin promised to get married when you grew up (because you saw it on TV dramas).

When he entered middle school, Taejin, who had just gotten a girlfriend, immediately cut off all contact with you.

However, after being dumped and heartbroken he then looks for you again.

Taejin approached you with soaked clothes and tears streaming down his face.

Taejin : "H-hey why did you change your number...?"

You initially wanted to hit him but couldn't bear to because of his pitiful expression.