“I apologize if I seem a little distracted,” Harry Styles said about halfway through One Direction’s performance at Apple Music Festival on Tuesday (Sept. 22).

For a split second, we understood. We sympathized with him, knowing he might’ve been thinking about the band’s impending hiatus; something that’s been heavy on our minds as well. Or maybe he was finding it hard to focus on singing old songs after the band just made their exciting album announcement and released an anthemic new jam, “Infinity.” Or, quite possibly, he was simply bemused by his own pink polka dot shirt.

All of those explanations would’ve been perfectly understandable, but none of them were the culprit invading Harry’s thoughts. Rather, he was too preoccupied by a certain girl in the room.

“I apologize if I seem a little distracted,” he said, intently scanning the crowd. “My sister’s on a date. I’m trying to keep an eye on it. Behave yourself… It’s disgusting!”

YEP. HE WENT THERE.

In between songs, Harry not-so-subtly called out his older sister, Gemma, and her date, who were apparently in the audience. And though he seemingly couldn’t spot them from the stage, we’re guessing Gemma’s cheeks must’ve been literally burning from the embarrassing brotherly shoutout.

“He’s watching you,” Liam Payne warned. “We’re all watching you.”

1D fans were absolutely tickled by Harry’s adorable, protective gesture, which definitely qualifies as #siblinggoals.

Now all we need to know is how it went when Harry met the suitor in question... hopefully the lucky dude got Harry's seal of approval!