[Intro: Dappy & Tulisa, Dappy, Tinchy Stryder]
Oh-oh-oh-oh
Oh-oh-oh-oh
Oh-oh-oh-oh
Oh-oh-oh-oh (Na na nai)
Oh-oh-oh-oh
Oh-oh-oh-oh (Tinchy Stryder)
Oh-oh-oh-oh (N-Dubz)
Oh-oh-oh-oh (Yo)

[Verse 1: Tinchy Stryder, Tinchy Stryder & Dappy]
It was nothin' but a quick thing
Kid's games, kiss chase, just a quick fling
Now I'm hopin' you never go missin'
Now I'm tellin' you, you can hold this ring, watch how it glistens
Thought it would be done as quick as the wind blows
Didn't think I would ever be involved
So I even wrote a song called "Don't Go"
Now it's just you and me on a love road
We done it like D-low, us two tiptoe, duck, dive, get low
And now I care less about who knows
Now we're deep in, way past intros
Dappy, explain though

[Pre-Chorus: Dappy & Tinchy Stryder]
See never did I think a boy like me would be in need
When all I really wanted was to have some fun
Now I'm losing my head, I'm telling you one thing (Oh-oh)
[Chorus: Dappy & Tinchy Stryder]
You're number one
See, I don't understand how you're number one
When it was just a fling before, now, you're the one
See, all I did was blink twice
From my homie to my only, number one (Oh-oh)

[Post-Chorus: Dappy & Tulisa]
Oh-oh-oh-oh
Oh-oh-oh-oh
Oh-oh-oh-oh
Oh-oh-oh-oh

[Verse 2: Tulisa]
I never thought I'd get here, never thought I would care
'Cause I was always looking out for me
I was being selfish, I couldn't see
All that I want was right in front of me
But, baby, I've changed
'Cause you got me tamed
You're my number one
Now you're priority

[Pre-Chorus: Dappy, Tinchy Stryder, Dappy & Tulisa]
See never did I think a boy like me would be in need
When all I really wanted was to have some fun
Now I'm losing my head, I'm telling you one thing (Oh-oh)
[Chorus: Dappy, Tinchy Stryder, Dappy & Tulisa]
You're number one
See, I don't understand how you're number one
When it was just a fling before, now, you're the one
See, all I did was blink twice
From my homie to my only, number one (Oh-oh)

[Post-Chorus: Dappy, Dappy & Tulisa, Tulisa]
You lift me off the ground
I always want you around
I ain't gonna let nothing get in the way
I'll never let nothing get in the way (Oh-oh-oh-oh)
You lift me off the ground
I always want you around (Woah)
I ain't gonna let nothing get in the way (Woah)
I'll never let nothing get in the way (Oh-oh-oh-oh)

[Brudge: Fazer]
Trust me when I say (What?)
That I ain't ever gonna let nothin' get in the way (Nah)
'Cause we was always cool as friends back in the day (Trust)
It's funny how you changed, you've got me goin' insane (Ha)
See, you ain't like the rest, you run in your own lane

[Chorus: Dappy, Dappy & Tulisa]
You are number one
See, I don't understand how you're number one
When it was just a fling before, now, you're the one
See, all I did was blink twice
From my homie (From my homie) to my only (To my only), number one (Oh-oh)
[Post-Chorus: Dappy & Tulisa]
You lift me off (Off) the (The) ground
I always want you around (Woah)
I ain't gonna let nothing get in the way (Woah)
I'll never let nothing get in the way (Oh-oh-oh-oh)
You lift me off (Off) the (The) ground
I always want you around (Woah)
I ain't gonna let nothing get in the way (Woah)
I'll never let nothing get in the way (Oh-oh-oh-oh)

[Outro: Dappy & Tulisa, Tinchy Stryder, Dappy & Tinchy Stryder]
Oh-oh-oh-oh
Yo, number one in the race, you're a leader
Oh-oh-oh-oh
Girl, you're out of this world, they can't see ya
Oh-oh-oh-oh
Oh-oh-oh-oh (Na na, na na)
And now you got a place in my heart
Oh-oh-oh-oh
It's funny how you actually went
Oh-oh-oh-oh
From my homie to my only, number one
Oh-oh-oh-oh
Oh-oh-oh-oh