NEED HELP! Looking for the singer of this korean song.

The promises, the places
And your smile, When we first met
Fallin' in love is like an ocean
still waves, and emotion bigger than that
Come closer, at last,
Only one chance, there’s no next time.
One time to shine
Next time is shame
But today I have prepared a lot of words
I’m done event-do
I’m done some event, too.
Some know how to love, technic,
I learned, inside my head
Blur too many concern
Love saying hello to me
I’m in love the word having me fall in love
The very first word handed to me
Sweet like spring to me
Your saying hello
Since I can’t erase it
Since I can’t let you go
‘Please don’t go.’ Holding back the tears,
I try to stop you with all my heart though,
It always starts with hello
And ends with good-bye
The word, hello but good-bye,
Making my heart in a smile and making me cry
The meeting with her, the irony of fate
I don't wanna fake it no more
The judgment of one moment
She's a one of a kind
truly hard to find
The heart I can’t stop,
Tied up, time to time what up shorty
However we try
question with no answer
The two can’t match our stride
ask about me cutie
I still rappin' you're my beauty
Far and far away since it can’t be caught
The word having me be kept in sadness
The last word left to me
So cold like icy winter
Now, saying hello
Since I can’t erase it
Since I can’t let you go
'Please, don’t go.’ Holding back the tears,
I try to stop you with all my heart though,
It always starts with hello
And ends with good bye
The word, making my heart in a smile
And making me cry
Perhaps I loved you with overflowing,
I was mournful going crazy, so sorry though
I can’t stop you
Can’t hold you, too
I’m still in misery over desperation though
There are only you
There is wish no more
But the word I couldn’t stop at last
Even with the thousand word ‘I love you’
Good-bye, hello, good-bye…

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