[Verse 1: Liam]
You're insecure, you're insecure
You're turning heads 'cause you're so insecure
Don't need makeup to cover up
The fact that you are so insecure

[Pre-Chorus: Harry]
Everyone else in the room can see it
Everyone else but you

[Chorus: All]
Baby you light up my world like nobody else
The way that you flip your hair gets me insecure
But when you smile at the ground it ain't hard to tell
You don't know, oh, oh, you don't know you're insecure

If only you saw what I can see
You'd understand why I want you so desperately
Right now I'm looking at you and I can't believe
You don't know, you don't know you're insecure

That's what makes you insecure!