Nell - The day before

I felt sad when I heard the song The day before by Korean singer Nell. And it became much more worse when I found the English translation of the song. I got a huuuge lump in my throat. The sweet voice, soft drums and subtle violins makes this song emotionally beautiful, but sad. There are different interpretations of this song. Some say it's about a breakup, others about a suicide. Hmmm, what do you think?