[Verse 1: Jade, Leigh-Anne]
Daddy doesn't think that you'll be good enough for me
Momma says, "Be careful, 'cause he'll break your heart in three"
They don't walk in my shoes, they ain't been kissed by you
My sister says she doesn't like the way you wear your hair
But I know that she's jealous, so why would I even care?
I have to lie about how good you make me feel

[Pre-Chorus: Perrie]
So, oh, tell me, tell me, you won't break my heart
You won't tear my world apart
That you'll be there when I need
'Cause I want to tell them

[Chorus: All, Jade & Jesy]
They just don't know you, they just don't know you
They just don't know you, they don't know you like I do
They just don't know you (They don't know)
They just don't know you (They don't know)
They just don't know you, like I do

[Verse 2: Jesy, Jade]
Talk is cheap and rumours spread, but they go with the wind
It's not about she said-he said, 'cause I know where it ends
I know the real truth, and the real truth is you
It's funny 'cause at times it feels like us against the world
They treat you like a criminal, but I'll still be your girl
I'd ride or die with you, walk the line if you asked me to
[Pre-Chorus: Perrie]
So, oh, tell me, tell me, you won't break my heart
You won't tear my world apart
That you'll be there when I need
'Cause I want to tell them

[Chorus: All, Jade, Jade & Jesy, Jesy]
They just don't know you, they just don't know you (They just don't know)
They just don't know you, they don't know you like I do
They just don't know you (They don't know)
They just don't know you (They don't know)
They just don't know you, like I do
La-la, li-like I do, they just don't know you

[Bridge: All, Jade]
You don't know about our love, you choose what you see
'Cause if you felt the way we love, you'd just let it be
You don't know about the times when it's just him and me (And me)
'Cause if you felt the way we love, you'd just let it be (Oh)

[Pre-Chorus: All, Jesy, Perrie, Jade]
Tell me, tell me, you won't break my heart (You won't break my heart)
You won't tear my world apart, (You won't break my heart)
That you'll be there when I need (When I need)
'Cause I want to tell them
[Chorus: All, Jade, Leigh-Anne, Jade & Jesy]
They just don't know you (They just don't know)
They just don't know you (They just don't know, oh-oh)
They just don't know you (No, oh)
They don't know you like I do
They just don't know you (Oh; They don't know)
They just don't know you (They don't know)
They just don't know you, like I do