"
Ulmyeonseo hal jureun na mollatdeon mal
Naneunyo oppaga joheungeol
"What I couldn't even say one time, What I did not know I would say as I cry" it shows that she wasn't able to confess to the boy she likes even once, and that she didn't know that she'll say it when she is crying. It just shows how sad she is, and shocked, even. It is actually a pretty touching part of the lyrics. I know this because I know Korean, and I come from Korea. You can't understand it with just words.