Now Rod has confirmed what the pair were up to on Alan Carr's 'Chatty Man', saying: "His [Harry's] car was here in the morning. Let's put it that way. But he may just have come round to pick something up...."
Realising his error, he added: "Bo*****s, I've let the cat out of the bag. Harry couldn’t be a kinder. He is very funny guy."
Ooops!
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Kimberly Stewart
Kimberly is 14 years older than 19-year-old Harry, and also has a two year old daughter with ex partner Benicio Del Toro.
Let it never be said that Harry doesn't have a type.
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19 Reasons Why We Love Harry Styles
(01 of16)
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1. He's got lovely, bouncy curls which we'd love to run our fingers through. (credit:Getty Images)
(02 of16)
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2. He's not afraid of getting naked. (credit:Twitter)
(03 of16)
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4. He was the cutest kid ever - just look at those cheeks! (credit:Rex)
(04 of16)
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5. His bromance with Nick 'Grimmy' Grimshaw. We heart a good bit of man love.
(05 of16)
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6. He scrubs up well in a suit. Yum! (credit:PA)
(06 of16)
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7. He loves animals *melts*. (credit:Wonderland)
(07 of16)
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8. He gave Taylor Swift enough material for about 10 more albums during their relationship. (credit:Splash)
(08 of16)
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9. He has tattoos. Lots of tattoos. OK, many are questionable but it just adds to his allure. (credit:Splash)
(09 of16)
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10. He loves his mum. Bless! (credit:Twitter)
(10 of16)
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11. He always gets the best girls (we love Flacko almost as much as Harry). (credit:Getty Images)
(11 of16)
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12. He's part of our favouritest band ever (ok, this week) - One Direction. (credit:Getty Images)
(12 of16)
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14. He's got some flashy cars. And a Capri. This is very cool indeed. (credit:Big Pictures)
(13 of16)
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15. He's not afraid to make a fool of himself (yes, that is him inside that thing). (credit:Gotcha)
(14 of16)
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17. He's the Robbie of 1D. (credit:AP)
(15 of16)
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18. He's charitable - 1D are releasing this year's Comic Relief single. (credit:PA)
(16 of16)
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19. He'd be an amazing mate. We are sure of this. (credit:AP)