There were two celebrities on stage at Taylor Swift's London Eras Tour Show.
During her debut gig at London's Wembley Stadium, the pop queen invited Ed to perform a medley of their collaborations as a surprise.
The two performed their duets Everything Has Changed and End Game as a surprise tune on the first of five London nights.
Around halfway through, Sheeran appeared from the back of the stage to join Swift for the song Everything, which is featured on her 2012 album Red.
They then shifted to End Game, a duet off Swift's 2017 album Reputation. After singing Sheeran's Thinking Out Loud, the two hugged, and Swift expressed her appreciation for their relationship.
"This is one of my best friends in the world to the point where I feel like he's a second brother of mine," Swift stated when asked about Sheeran.
"We traveled together on the Red Tour. Every time I do the 'Red' segment of this program, I think of the memories we've created. And now he plays at Wembley every week.
She continued, "This is normal for him. And he works so hard; he's on tour right now, and he's probably exhausted. But he wants to come and play for you and all of us, so give it up for Ed Sheeran.