《IZ*ONE (이즈원) - You're In Love, Aren't You?》的歌詞如下：
You're in love, Aren't you?
Oh-oh-oh-oh-oh
You're in love, Aren't you?
Oh-oh-oh-oh-oh
이제 봐 넌 들떠있던 너의 입술
現在看 你的嘴唇像是要親吻
아직 따라오지 않는 너의 손길
你的手還沒有跟上來
아닌 척 할 때면 왜 너만 잘못해
假裝不是的時候 為何只有你做錯
이제 와서 뭐해?
現在又怎樣？
이제 와서 뭐해?
現在又怎樣？
이제 와서 우리 둘이서
現在我們兩個人一起
You're in love, Aren't you?
Oh-oh-oh-oh-oh
You're in love, Aren't you?
Yeah, yeah, yeah, yeah
너도 나처럼 사랑에 빠졌으면 해
你也像我一樣陷入愛情就好了
이젠 날 보며 미소 지워줄래?
現在看著我，微笑著擦掉我？
나를 웃게 만드는 건 네가 아닌데
不是我讓你笑，但是你不讓我笑的話
아닌 척 해도 돼, 날 보며 말해줘
你可以假裝不是，看著我告訴我
그런 거 아냐? (아냐)
那不是那樣的嗎？(不是)
또 생각하잖아 (다시)
又想了吧？(重新)
왜 내게 다가와줄래? (Now you're my love)
為什麼要向我走來？(現在你是我的愛)
뭐든지 될 것만 같은데 (Oh-oh-oh-oh-oh)
好像任何事情都可以(Oh-oh-oh-oh-oh)
You're in love, Aren't you?
Oh-oh-oh-oh-oh
You're in love, Aren't you?
Yeah, yeah, yeah, yeah
너도 나처럼 사랑에 빠졌으면 해
你也像我一樣陷入愛情就好了
그럴 때면 그땐 그땐 우리 two of us two of us two of us two of us two of us two of us two of us two of us two of us two of us two of us two of us two of us two of us two of us two of us two of us two of us (love)
陷入愛情的時候那個時候那個時候我們兩個兩個兩個兩個兩個兩個兩個兩個兩個兩個兩個兩個兩個兩個兩個兩個(愛)
Baby tell me, yeah yeah yeah (이건 아닌 거잖아)
寶貝告訴我，耶耶耶(這不是真的)
우리가 아닌 거잖아 (이건 아닌 거잖아)
這不是我們(這不是真的)
이건 우리들만의 비밀 (아닐 거잖아)
這是我們之間的秘密(不是這樣的)
Yeah, I got you girl (Oh-oh-oh-oh-oh) Yeah yeah yeah yeah yeah yeah yeah yeah yeah yeah yeah yeah yeah yeah! (Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us Two of us) (love) (love) (love) (love) (love) (love) (love) (love)！