Well dang! I cannot be mad at Taylor Swift for this. Nor Ed Sheeran for that matter. Both talked about this during interviews. In one interview, Ed spoke about Taylor sending music.
“I remember when I did a song with [Taylor] for her album, I was in San Francisco, and they sent someone with a locked briefcase with an iPad and one song on it. They flew to San Francisco and played the song I’ve done with her and asked if I like it...I was like, ‘Yeah,’ and they took it back. That’s how I hear it.”
Then in the BTS video for the video "End Game," it was a bit awkward while she was shown rehearsing to a click track. Watch Below..