The 18-year-old One Direction star revealed he purposely gave Peaches - who is now happily in a relationship - the wrong mobile number after chatting together on a night out.
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The singer told OK! magazine that when the socialite asked him for his number, he lied and gave her the wrong details.
He said: "She must hate me. If she's reading this, say hello next time you see me, Peaches. I might give you the right number."
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He also revealed that he once jumped into bed with a friend's mum while she was asleep for a dare.
The boyband heartthrob also said of safe sex that he would never not wear a condom, adding: "It's too much of a risk. If you're not ready for a child, then don't risk it."
