Perrie
Does he tell u he loves when u least expect it?
Does he flutter your hart-, hart when he kisses your neck?
No scientist, of biology
It's obvious... When he's holding me
It's only natural, that I'm so affected...
Jade
Oh, and my hart-, hart won't beat again
If I can't feel him in my veins
No need to question, I already know

All
It's in his DNA, D-D-D-DNA
It's in his DNA
And he just takes my breath away, b-b-b-breath away
I feel it every day
And that's what makes a man
Not hard to understand
Perfect in every way
I see it in his face
Nothing meer to say
its in his d-d-dna

Jesy
It's the blue in his eyes that helps me see the future
Fingerprints that leave me covered for days,yeah hallo yeah
Now I don't have any first degree
But I know... What he does to me
No need to work it out, it's so familiar
Jade
Oh, and my hart-, hart won't beat again
If I can't feel him in my veins
No need to question, I already know

All
It's in his DNA, D-D-Dna
It's in his DNA
And he just takes my breath away, b-b-b-breath away
I feel it every day
And that's what makes a man
Not hard to understand
Perfect in every way
I see it in his face
Nothing meer to say
It's in his D-D-D-D...DNA

Leigh-anne
It's all about his kiss
Contaminates my lips
Our energy connects
It's simple genetics
I'm the X to his Y
It's the colour of his eyes
He can do no wrong
No he don't need to try

Leigh-anne with all
Made from the best
He passes all the tests
Got my hart-, hart beating fast
It's cardiac arrest
He's from a different strain
That science can't explain
I guess that's how he's made
In his D-D-D...DNA

All
It's in his DNA, D-D-D-DNA...
It's in his DNA
And he just takes my breath away, b-b-b-breath away
I feel it every day
And that's what makes a man
Not hard to understand
Perfect in every way
I see it in his face
Nothing meer to say
It's in his D-D-D-D...DNA