Their relationship is already believed to be Swift's source material for "Style," "Out of the Woods" and "I Knew You Were Trouble," and now seems to be behind 1D's "Perfect."
We've already broken down how the new tune's lyrics throw back to Swift's tracks, but the video offers up one final piece of the puzzle. Right as the boys get to the lyric, "And if you like cameras flashing every time we go out/If you're looking for someone to write your breakup songs about," the camera focuses right on Harry.
See for yourself:
What do you think of the "Perfect" video? Do you think the song is about Taylor Swift?