Even besties like Taylor Swift and Ed Sheeran argue because of different views. That was exactly the case when two music powerhouses worked on their collab "Everything has Changed."

In an interview with MTV UK's show Sounchain, Ed shared his funny experience working with Tay-Tay.

"I went to her house, she cooked an apple pie - she cooks really good sh-," he said.

"She has a little Taylor guitar, she got it out and she's like, 'I had this idea for this song,' ... and she pretty much had the verse, bridge and chorus done, but we argued about that one chord - 'I just want to know you, better know you' - she didn't like that, and I kind of forced it upon her."

"It was quite a funny situation. It's like [her room is] surrounded by Grammys; she has like seven or eight and like Billboard Awards and Songwriting Guild," he said, "And I'm like, 'this chord,' and she's like [pointing to her awards]," Ed added in jest.

Despite the difference in opinions and views, Taylor and Ed remain to be very good friends. The Brit singer has recently told Sydney Confidential that someone like Tay-Tay is his biggest competition in the biz.

"My competition at the moment is probably somebody like Taylor," he said. "It's a healthy competition. She's someone to aspire to because she's one of the biggest touring acts and record-selling acts on the planet. That's where I want to be and I'll work up to that point."

Stay tuned for more Taylor Swift and Ed Sheeran news here!