Pop pop bubble in my heart
Pop pop bubble from the start
처음 느껴본 이 기분이
Like a bubble floating high
네가 웃을 때 내 마음도
Flying up into the sky
매일 꿈꾸게 돼
너와 나의 story
시작된 것 같아
My very first, first love
Pop goes my heart when you're around
Bubble bubble, can't come down
달콤한 이 feeling
First crush, crushing me now
Pop goes my heart, spinning round
Bubble bubble, sweet and loud
This is my first crush
First crush, you're my crown
거울 앞에서 연습해봐
What to say when you walk by
핸드폰 속 네 사진들
Make me giggle, I don't know why
매일 꿈꾸게 돼
너와 나의 story
시작된 것 같아
My very first, first love
Pop goes my heart when you're around
Bubble bubble, can't come down
달콤한 이 feeling
First crush, crushing me now
Pop goes my heart, spinning round
Bubble bubble, sweet and loud
This is my first crush
First crush, you're my crown
Pink clouds in my head
Butterflies instead
Everything feels like a dream
You're my bubble cream
Nothing's what it seems
When you're here with me
Pop goes my heart when you're around
Bubble bubble, can't come down
달콤한 이 feeling
First crush, crushing me now
Pop goes my heart, spinning round
Bubble bubble, sweet and loud
This is my first crush
First crush, you're my crown
Pop pop bubble in my heart
You're my crush right from the start