[Intro: Tzuyu, Nayeon]
Ah, ah, ah, ah
Yeah, the best thing I ever did
Ah, ah, ah, ah
Hmm

[Verse 1: Mina, Momo]
December, as we end the year together, I remember
Our memories pile up like the snow
So many words I saved for you linger in my mind
Makes me nervous

[Pre-Chorus: Jeongyeon]
Used to feel lonely and empty
But December is no longer lonely

[Chorus: Nayeon, Jihyo]
The best thing I ever did
Was that I met you
The best thing I never did
Was that I never broke up with you, and that I am still with you

[Pos-Chorus: Tzuyu, Sana, Mina]
All I wanna do, all I wanna do
Just like this, like this, like this, like this
The two of us forever
All I wanna do, all I wanna do
Just like this, like this, like this, like this
Let us never change