The song is on Charli’s “Brat” album, which came out in June.

I’m so sorry.'

And then was like, ‘You know, maybe I should be on a version of the song.’

Charli XCX and Lorde

Charli XCX and Lorde have a complicated relationship.Charles Sykes/Bravo via Getty; Michael Kovac/Getty

I didn’t even ask her.

She brought it up," Charli said.

Turns out that Lorde’s part was cathartic for her.

“There was such a rawness and an immediacy to what I was saying.

I love that we truly did work it out on the remix.”