Liam was reading out some of the fans' banners and signs, and the infamous 2011 Louis Tomlinson tweet to Harry Styles made the cut! You know the one? Of course you do. It reads: "Always in my heart @Harry_Styles. Yours sincerely, Louis."
Yep, that's the one. Liam probably had zero clue about the significance of the bromantic tweet that set the Larry ship in motion, which made it that much cuter.
That 'Always in my heart' tweet became the second most retweeted Twitter post ever, passing the one million retweets mark earlier this year.
It's all rather bromantical, isn't it?
In other Harry-related concert hijinks news, someone flung a banana at him, which just missed his face. His reaction is everything though.