Fans Melt Down as Sapphic Sparks Fly in Charli xcx Collab with Billie Eilish on 'Guess' Remix

There's plenty for the guys to love about Charli XCX's collab with

Was it only the boys that Charli XCX and Billie Eilish were getting worked up? Eilish, who identifies as bi, vows she'd "hit it" even though Charli "likes boys" in their collaboration for a remix of Charli's song "Guess."

The video starts with Charli XCX singing alone in a room that looks like the aftermath of a party. Soon enough she's joined by more and more revelers as the party gets going again – and as she teases the viewer about having a "Guess" as to the color of her underthings.

Eilish arrives by crashing through a wall with a bulldozer, and the two take to a street strewn with lingerie – not to mention a small mountain of dainties, on which the two female pop stars roll around.

But things only get hotter from there.

"During her verse, Eilish sings: 'Charli likes boys, but she knows I'd hit it'," UK newspaper the Independent documents. "'Charli, call me if you're with it'," the newspaper quotes from the song.

Charli joins in as the two close out the song to a shot of them cuddling and waving a pair of pink panties around: "You wanna guess what me and Billie have been texting about," Charli XCX teases. "You wanna guess if I'm serious about this song."

Fans went mental at the implications.

"SCREAMING CRYING THROWING UP WHATT NO YOU DID NOT," one person commented on the YouTube post of the video. "'Charli likes boys but she knows id hit it' LIKE BILLIE AHHHH".

"ngl Billie ate this the fuck up, her 'charli likes boys but she knows i'd hit it' line had me HOWLING," a second person posted.

"'Charli likes boys but she knows i hit it' omg billie this is literally iconic," a third agreed.

Some fans went beyond the "icon" description into "history-making" territory.

"now this collaboration is already HISTORIC," one person declared.

"This right here is history being made," another stated.

Others fell back on words like "obsessed" and similar descriptors, with one person posting, "im addicted to this please help.

"i didnt think charli and bilie would go THIS HARD."

Agreed another, "is there a better word for 'obsessed' because i cant get more than obsessed of this collab. what an era to be alive".

The daring ditty is just the latest volley in what's turning into a "Brat" summer, with Charli XCX's album of that name having made a seismic impact since it dropped on June 7.

At least one fan took note of the song's commitment to an important social cause.

"'All unworn undergarments will be donated to survivors of domestic violence through "I SUPPORT THE GIRLS"' ilysm Charli and the fact that you're helping survivors of domestic abuse?" posted one viewer. "My respect is even higher."

Fans had been keen for the song evenn before its rlease, thanks to to Charli XCX teasing an upcoming collab and holding back on the identity of the other singer.

"The singer sent the internet into a frenzy on Wednesday after she shared a mysterious picture of just two bodies with their heads out of the frame," UK newspaper the Daily Mail reported.

"While the song was released at 6pm EST on Thursday," the newspaper added, "Charli only confirmed the collaboration with Billie earlier that evening as she shared a sneak peek of the upcoming track."

The Independent noted that "Brat" "captur[es] an attitude that rejects other TikTok-friendly trends such as 'clean girl living' and instead embracing a messier, more hedonistic outlook," perhaps making the album a worthy successor to Troye Sivan's epic party-fest "Something to Give Each Other," the 2023 album that featured the sexy song of last summer "Rush," as well as sizzling singles "Got Me Started" and "One of Your Girls."

Watch the video below.