I don't think they've ever actually hung out or really talked, but in Seventeen Harry said that Taylor's on his 'Hot List' and that she 'couldn't be a better person' and really sweet and nice and stuff. I can't ever seeing them have a thing though, they're personalities seem so different to me.
eh see i still consider seventeen part of the people who are the ones paid to make harry and louis look as straight as can be. and again, people love the idea of harry and taylor (two of the biggest celebrities, everyone would love it) and they make it seem like there ~could be something~ when they do things like that in magazines in text interviews but never once have i heard harry mention her in a video interview and ive never heard tswift mention him either (though ive only seen like.. one of her interviews hah). but yeah, i dont believe half the stuff that "the boys" say in text interviews and magazine articles. if it doesn't come from their mouths, dont believe it. thats my motto ~