'Louis says I'm a good flirt but I think you have to be cool to be a good flirt,' he says.
'I don't think I'm very cool!'
But if you're lucky enough to have the 18-year-old 1D hottie hit on you, you're more likely to keep him keen if you play hard to get.
'I think it's attractive when someone turns you down,' he tells Top Of The Pops magazine.
'You don't want to say yes to someone straight away.'
Thanks for the heads up, Harry.
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