A surprise guest was among the thousands in attendance at Lady Gaga's Chicago Wrigley Field concert on Friday.
Fans spotted the “Bad Romance” singer’s ex-fiancé, Taylor Kinney, among the throng of concertgoers. Several attendees posted about the celebrity sighting, with a few people sharing pics of the celebrity posing for snaps with people in the stadium.
While Gaga didn’t address her ex’s attendance at the concert, she did post a pic and caption on Twitter, writing about her historic appearance at the Chicago stadium. “So proud to have been the 1st Woman to headline at Wrigley Field #joanneworldtour with my manager and friend by my side! We love u Chicago!” Gaga wrote.
The Chicago Fire star had famously proposed to Gaga on Valentine’s Day in 2015, but the couple ended their five-year relationship in July of 2016.
The couple had always seemed supportive of each other’s careers. In 2016, Kinney turned down the opportunity to take the stage with Gaga at the Golden Globes award ceremony to make sure all eyes were on her.
“Do you want to know something wonderful?” she told PEOPLE that year. “They asked him to present tonight, but he said no because he just wanted it to be my night and he wanted to support me. Isn’t that special? I just found that out. I love him so much.”
The 31-year-old is currently on her Joanne world tour — based off of the album of the same name. Joanne reached the top of the U.S. charts in October. Her world tour kicked off in Vancouver on Aug. 1.
A new Netflix documentary on the famed singer titled Gaga: Five Foot Two, is set to premiere at this year’s Toronto International Film Festival before hitting the streaming service this fall.
This article originally appeared on PEOPLE.