《21st century girl》是防彈少年團演唱的歌曲，以下是這首歌的歌詞：
Verse 1:
I'm standing here in front of you
But I feel like I'm a million miles away
I'm looking at your face but I can't touch you
It's like I'm dreaming and you're the dream I can't wake up from
Pre-Chorus:
I don't know what to say
I don't know how to feel
But I know that I need to say goodbye
Chorus:
21st century girl, you're so beautiful to me
I hope you understand that I need to be free
I'm just a boy from the 21st century too
Trying to find my way back to you
Verse 2:
I hope you're happy, I hope you're fine
I hope you find someone who loves you more than I could
I'll be thinking of you every step of the way
And I know that we'll meet again someday
Pre-Chorus:
I don't know what to say
I don't know how to feel
But I know that I need to say goodbye
Chorus:
21st century girl, you're so beautiful to me
I hope you understand that I need to be free
I'm just a boy from the 21st century too
Trying to find my way back to you
Bridge:
It's been a long time coming
But I hope that you can see
That this is something that I cannot control
And I hope that you can understand
Chorus: (重複)
21st century girl, you're so beautiful to me
I hope you understand that I need to be free
I'm just a boy from the 21st century too
Trying to find my way back to you
Outro:
I hope I see you again, girl
But until then, goodbye, goodbye, goodbye.