Taylor Swift attends “Monday Night Football” for the Chiefs-Saints in Kansas City

Swift, 34, has been dating Kelce, who turned 35 on Saturday, since last year. She made her first appearance at Chiefs games in September of last season.

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The Chiefs won 26-13 and Kelce contributed nice catches for 70 yards. Khalen Saunders, the brother of their backup, had one of the game's highlights when he intercepted Patrick Mahomes.

While Swift missed an unremarkable performance from Kelce in Week 3, she missed his breakout game against the Chargers in Week 4. Against a division rival, Kelce had his best day of the season, catching seven passes for 89 yards.

Even though Kansas City is undefeated, Kelce hasn't performed at his usual level this year. Through four games, he averaged the fewest yards per reception and yards per game of his career. He also has no touchdowns as of Monday.

The Chiefs offense could definitely use Kelce's contributions. The team is missing last season's leading rusher, Isiah Pacheco, after he broke his fibula in Week 2, as well as leading receiver, Rashee Rice, who is reportedly likely out for the season.