Taylor Swift is rumored to be annoyed with gal pal Gigi Hadid over her growing relationship with One Direction band member Zayn Malik.

Hollywood Life reports the "Bad Blood" singer's anger stems from Malik's recent Twitter feud with boyfriend Calvin Harris. The war of words began after the 22-year-old Malik took a shot at Swift over her decision not to put any of her music on any streaming services.

Harris quickly came to his girlfriend's defense, posting, "You've made your money? Cool...f*** the 99% of musicians who depend on these services to survive right? Yeah f*** em. If u don't get what it means when a successful artist uses their celebrity to benefit every other musician and songwriter in the industry...stay out of my f***in mentions pls. While u kids are refresh voting teen choice awards there's some poor f***er in a basement making your new favorite record trying to survive. Meaning....stay out of things you don't understand."

Malik later responded in a post, arguing Harris had misinterpreted the reasoning behind his initial statement.

On Sunday night, Hadid and Malik were spotted hanging out together after Justin Bieber's American Music Award after-party, instantly sparking speculation that Swift would be none too pleased by her pal's actions.

The two previously butted heads when Hadid became romantically involved with Joe Jonas in a relationship that lasted for about five months. Jonas and Swift previously dated as teens, with their relationship ending in a very public breakup.

Swift and Harris have now been dating for nearly a year, and recently, rumors began percolating that the two might be on the verge of taking things to the next level in their relationship by getting engaged. Word is the two are now planning to spend the holidays together, with Swift being more than just a little excited about the chance to give her boyfriend "his first real Thanksgiving."