Swift kicked off the show acting as a ring leader to her own onstage circus with a rousing rendition of her nominated song, "We are Never Ever Getting Back Together," while Sheeran slowed things down for "The A Team" with a memorable duet with Elton John.
And if fans liked what they saw, they better get used to it because the two are hitting the road, sans John, on Swift's upcoming Red tour, which kicks off next month.
We recently caught up with Sheeran, who is Swift's opening act, who revealed how she easily persuaded him to join her on tour.
"There's no one really bigger in the world right now that I could tour with so to be able to get on that tour and to be invited on its not like some of these tours where people have to pay money or it's a favor," Sheeran said. "She just literally texted me saying, 'Do you want to come on tour?' and I was like, 'Yes.' "
This isn't the first time they've collaborated, the two have a duet, "Everything Has Changed," on Swift's Red album, and Sheeran admitted there's a "large possibility" that the two will be writing together on the road. So why do these two work so well together?
"We're male and female, but we do exactly the same thing like we're both the same age, we both write songs with guitars we both tour playing acoustic music and that's kind of it," Sheeran said. "We've got a similar sense of humor. I guess we just have a lot in common."