The "bad blood" may be too much as Katy Perry's feud with Taylor Swift has reportedly been pushing Calvin Harris's girlfriend into near obsession levels.

According to sources from Fox News, the "Bad Blood" singer is reportedly hell bent on beating Taylor Swift at the top of the charts with the most no. 1 hits.

"She wants seven No. 1s," the source said, "Katy tied Michael [Jackson]'s record for having five No. 1s from a single album, and Taylor wants to beat Katy. She wants to be the greatest."

But the source has no doubt that Taylor Swift can trump her rival Katy Perry in the charts because, "She knows all the radio execs by name and how to work a room. She's a complete pro."

Fox News reported that Taylor Swift "has been pulling out all the stops" with her "1989" world tour as she asked Alanis Morissette, Mary J. Blige and Ed Sheeran to join her onstage.

In an interview with Rolling Stone, the "bad blood" between the two became apparent as Taylor Swift was said to have alluded to Katy Perry when she talked about fake musicians in the industry.

Calvin Harris' girlfriend explained, "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?'"

"[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! It had to do with business. She basically tried to sabotage an entire arena tour."

Taylor Swift added more, referencing to her feud with Katy Perry, "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."