Ed Sheeran's Favorite Taylor Swift Song Is...

Taylor reveals which 1989 track Ed liked best.

We already know what most of Taylor Swift's friends think of 1989, her fifth album, which she dropped on Monday. Lena Dunham, Sarah Hyland, Lucy Hale and Selena Gomez all gave their thoughts:

But, other than dubbing it "stellar" and encouraging fans to "go grab" it, we never heard what Ed Sheeran thought -- after all, he is one of her best friends. Together, the two wrote "Everything has Changed" on 2012's Red, and they play each other new music to get their opinions.

“I remember individual circumstances when I would write a song and be so excited about it, so I’d play it for Ed," Swift said in Thursday's interview for "On Air with Ryan Seacrest." "Ed’s favorite song on the album is ‘Bad Blood.’"

Sheeran loved "Bad Blood" so much, he wanted it to be the first song off the album, but Taylor had other ideas.

“I played it for Ed as soon as I wrote it, which I think was was about a year ago,” she shared. “And at that point, it was just a really basic demo track … and he was going, ‘This has to be the first single! This has to be the first single!’ And I was like, ‘Eh, we’ll see.’ But since he’s now heard the album and heard the final track, he loves it even more. It’s so cool to have friends who are so supportive … I feel so lucky. And he does have a really good ear.”

Taylor also recalled playing the song for Lorde:

"My friend Ella, Lorde, I played her ‘Style‘ as we were driving down the PCH and we were going to lunch in Malibu. I said, ‘Hey, I just finished this thing, can I play it for you?’ And I remember when that beat drops in the intro of the song, she was just like, ‘Yeahhhhh!’"

As for Karlie Kloss and Lena Dunham, these lucky ducks got to hear the album in full way before anyone else did:

“And then Karlie [Kloss] … we took a road trip to Big Sur and I played her pretty much the entire album. Lena Dunham has heard it beginning to end. She heard the stuff I was writing for two years.”