Halsey made a surprise appearance at BTS‘ Paris concert to perform their hit collab "Boy With Luv."

Here's how it all went down: The boys walked out on stage, started the song, and performed their choreography as they normally do—except no one expected Halsey to pop up behind them. She was decked out in a pair of light denim jeans and a pink mesh top, complete with hot pink hair, matching BTS perfectly.

This is the first time the "Without You" singer has performed with BTS following their epic 2019 Billboard Music Awards performance in May. The group is currently wrapping up the European leg of their Love Yourself: Speak Yourself World Tour before they head to Japan to perform four more sold-out shows.

Watch a fan-shared video of Halsey and BTS' "Boy With Luv" performance, below:

Following the performance, Halsey opened up about how she feels about the boys while addressing the screaming crowd in French. “These boys are so special, they’re my family. Come on, let’s all scream. BTS!” she said.

Fans in attendance literally lost all chill over the performance—and these videos are all the proof you need.

Meanwhile, BTS is having one of the best weeks EVER. Not only did they drop a brand new track with Charlie XCX called "Dream Glow," but they announced their new mobile game, BTS World, will be released on June 25! On top of that, they've been invited to become recording academy members.

Celebrity Fans of BTS