초롱아, 한국에서 즐거운 시간 보내다가 돌아온 것 환영한다. 
I am happy for you. Talk to you later.

How do you expect me to respond to this?
There's a reason I haven't talked to you since then.
You don't even know what you did wrong, do you?

You never said sorry.

You're the main reason why I'm so bitter.
You're the cause of most of my insecurities.
You're the one who gave me such a hardened heart.

"Talk to you later" ?

No.

Not until you apologize.