Is Harry Styles taking a page from Taylor Swift's book [1] and "making fun of his exes"? It certainly seems like it. During a concert in Copenhagen, Denmark, on March 18, the English singer sent fans into a frenzy when he made a sly reference to his former flame's hit song "22." While wishing a fan a happy 22nd birthday, he seemingly quoted one of the track's lyrics when he said, "She's 22, okay. I don't know about . . ." before stepping away from the microphone.

The pair only dated from December 2012 to January 2013 [2], but that didn't stop "Haylor" fans from freaking out. Not only did the "shout out to his ex [3]" cause a few high-pitched screams in the audience, but the moment quickly went viral on Twitter. See the moment in full ahead.

Harry wishing a fan a happy birthday in Copenhagen, 18/3 via mileybieber1d pic.twitter.com/kYReXXSLoG [4]

— Harry Styles Updates. (@TheHarrySource) March 19, 2018 [5]