The 40-year-old rocker, who recently recorded a version of Swift's entire "1989" album, asked the "Shake It Off" singer if a dream had ever inspired one of her songs. Swift was eager to answer that "All You Had To Do Was Stay" came to her while sleeping.
"I had a dream that my ex showed up at my door, knocked on my door, and I opened it up, and I was about ready to launch into the perfect thing to say," she recalled. "And instead, all that would come out of my mouth was that high-pitched chorus of people singing, ‘Stay.'”
From there, she wrote the track. "You go to say something else, and it’s just like ‘Stay, stay, stay,'” Swift continued. “And I woke up and I was like, ‘Oh, that was mortifying, but that’s kind of a cool vocal part.'"
During the course of the interview, Swift never actually revealed which ex was in her dream.
The story did, however, lead to the musicians talking about the differences between their versions of the same song.
"My version of it is like, ‘All you had to do was stay. Sorry about it. I don’t miss you. And now you’re back,'" Swift explained. As for Adams' interpretation, the 25-year-old artist thought he was saying, “All you had to do was stay. You broke my heart. That’s all you had to do."