Taylor Swift's best friends Ellie Goulding and Lorde partied with the singer's enemy Katy Perry.

Ellie Goulding posted a photo on Instagram of herself partying with Katy Perry and another Swift BFF, Lorde. Goulding captioned the photo, "Don't really remember this but ... good times [dancing flamenco girl]."

The three have been friends for quite some time, and they even hung out after the 2014 Brit Awards. Perry also asked Lorde to be her opening act for her Prismatic World Tour, but Lorde turned the offer down because she was also getting ready for her own world tour.

After a couple of hours, the photo was deleted. But before that, it got 60,000 likes and several people had taken screenshots of the "incriminating" photo.

It has been just weeks since Swift debuted her song "Bad Blood," which is supposedly a song about her former friend Katy Perry. Goulding had appeared in the music video, playing a character called "Destructa X."

In a Rolling Stone magazine interview, the Grammy winner shared that she is involved in an ongoing feud with a fellow pop star, whom she calls a "straight up enemy."

Most people have guessed that this pop star is none other than Katy Perry, because the latter allegedly "sabotaged" Swift's concert tour by stealing her back-up dancers.

In response to the Rolling Stone interview, Perry referenced "Mean Girls" in a tweet, where she said, "Watch out for the Regina George in sheep's clothing."

Recently, rumors also surfaced that Perry was composing a revenge song about Taylor Swift, and she enlisted the help of Taylor's ex-boyfriend, John Mayer. The song will reportedly include dirt on the "Blank Space" singer.

According to The Daily Mirror, because of the Instagram photo involving Ellie Goulding and Lorde, fans are speculating that Swift's new song might be about her BFF's betrayal.

"Lorde & Ellie Goulding have guaranteed Bad Blood 2 to be written about them on Taylor's next album," one fan commented.