DBSK's lyrics:

Nun matchuji motanun gudael ilgul su obtjyo
Girul irhoborin ai gataso gidarigoman itjyo

Oton marul halgonji sashil nan algo itjyo
Jinshimi aningol nunchi chaengollyo nunmuri malhajanhayo

Don't say goodbye
Gu sonul nochi mallanun maumi dullyoyo
Gudae mami dullyoyo ajik namanul wonhajyo
Gudaen sumgil su obtjyo gudaen gojitmarul motajyo

Horakhal su obsoyo heojijan gojitmal
Nunul bogo malhaebwayo anijanhayo jinshim anijanhayo

Don't say goodbye
Gu sonul nochi mallanun maumi dullyoyo
Gudae mami dullyoyo sesangi dung dollyodo himdun sarangirado
You are my love, you are my soul

Don't say goodbye don't leave me now oh~
Hamke nanun yaksogi naegen jonbuingollyo

Don't say goodbye You are my everything to me
Jichin nae harunun hangsang gudael chatgetjyo
Maruji annnun saemchorom gudael saranghalkeyo
You are my love, you are my soul

Don't say goodbye you are the only one for me
Obsotdon ilchorom onuri to jinamyon
Soro mamul nochi anko modu igyonaegetjyo
Cause you are my everything to me

Cause you are my everything to me

Nina's lyrics:

Today I heard my favorite song on the radio
I close my eyes and saw our first hello
And then I saw the time we fell in love
In each others’ arms
I open my eyes and you were gone

Suddenly I realized how I love you so
And how I get surprised without your love
Since the time we said goodbye
It’s hard to make you stay
How I wish you’d never go away

CHORUS:
Don’t say goodbye
It’s hard to let you go
Tomorrow seems so far away for me to know
If you and I will always be in love forevermore
Just leave me with the memories
All alone
All alone

Today I read your letters
And waited for your call
I wondered if you think of me at all
And then I turn the radio on
And heard our fav’rite song
Then I knew you’ll soon be coming home