As everyone in the free world now knows, Taylor Swift has learned to shake off the haters. All the way to number-one, in fact.
But there's one fellow artist Swift admits she can't just forget about, so much so that she penned the upcoming song "Bad Blood" about this unnamed individual.
"For years, I was never sure if we were friends or not. She would come up to me at awards shows and say something and walk away, and I would think, 'Are we friends, or did she just give me the harshest insult of my life?'" Swift told Rolling Stone.
"[Then last year] she did something so horrible. I was like, 'Oh, we're just straight-up enemies.' And it wasn't even about a guy!"
Whoa! A controversy surrounding Taylor Swift's personal life that does not involve a guy?!? Tell us more.
"It had to do with business," Swift says. "She basically tried to sabotage an entire arena tour. She tried to hire a bunch of people out from under me. And I'm surprisingly non-confrontational - you would not believe how much I hate conflict. So now I have to avoid her. It's awkward, and I don't like it."
Swift typically gets along well with celebrities.
She counts Selena Gomez, Lorde, Lena Dunham, Karlie Kloss, Dianna Agron, Hailee Steinfeld and Sarah Hyland among close friends.
And she's not a stranger to writing about real-life relationships, of course; these subject are just typically ex-boyfriends.
"Sometimes the lines in a song are lines you wish you could text-message somebody in real life," she adds. "I would just be constantly writing all these zingers = like, 'Burn. That would really get her.'
"And I know people are going to obsess over who it's about, because they think they have all my relationships mapped out. But there's a reason there are not any overt callouts in that song."
Who do you think it's about, people?!?!??!?!