Katy Perry's Boyfriend Diplo Serves Taylor Swift

It used to be mad love.

The Katy Perry / Taylor Swift feud burns on.

Earlier this year, Taylor revealed the song “Bad Blood” off “1989” is about another female artist (though she declined to reveal who):

“For years, I was never sure if we were friends or not,” she says. “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?'” Then last year, the other star crossed a line. “She did something so horrible,” Swift says. “I was like, ‘Oh, we’re just straight-up enemies.’ And it wasn’t even about a guy! It had to do with business. 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.”

Katy Perry. She’s talking about Katy Perry.

This prompted Katy to Tweet a response:

Today, Katy’s (rumored) boyfriend, Diplo, is adding fuel to the fire; he threw some major shade at Taylor: