Pop superstar Taylor Swift delighted fans at her third consecutive show in Amsterdam on Saturday night with a surprise performance of a rarely played song and a sweet tribute to her boyfriend, NFL tight end Travis Kelce.

During the show’s customary acoustic segment, Swift strayed from her usual setlist, picking up the piano to deliver a medley of fan favorites.

The highlight of the medley was undoubtedly “Mary Song,” a track from her debut album that has become a fan favorite due to its rumored connection to Kelce.

The song’s lyrics, “I’ll be 87, you’ll be 89,” have long been interpreted by fans as a reference to Kelce’s jersey number (87) and Swift’s birth year (1989).

This theory gained further traction when the couple began dating, solidifying “Mary Song” as a symbol of their relationship.

Fans have been clamoring for a live performance of “Mary Song” for months, and Swift finally delivered on Saturday night. She cleverly mashed the song with a track from her latest album, “so high school,” which is also believed to be about Kelce. Swift further fueled the flames of romance by incorporating “Everything Has Changed” from her “Red” album, seemingly referencing their whirlwind transition from strangers to lovers.

Social media erupted after the performance, with fans praising Swift for the unexpected treat. One fan on Twitter called it “the absolute best mashup ever,” while another gushed, “Thank you for that to the anti-hero songstress!”

This surprise performance adds another layer of sweetness to Swift’s already successful “IRS” tour. Fans can expect more surprises and heartwarming moments as the tour continues.