Perrie: Does he tell you he loves you when you least expect it? Does he flutter your heart when he kisses your neck? No scientist or biology, it's obvious when he's holding me It's only natural that I'm so affected Jade: Oh, and my heart 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-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 more to say, it's in his D-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 hey 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, oh woah Jade: And my heart 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-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 more to say, it's in his 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 Made from the best, he pa**es all the tests Got my heart 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: Aah, Aah, Aah, Aah... Perrie: Oh woah woah woahh, ohh All: It's in his DNA, D-D-D-DNA It's in his DNA And he just takes my breath away, 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 more to say, it's in his D-D-D-DNA