Travis Kelce has played in six NFL games this year, and he's performed much better when Taylor Swift has been in attendance.

In the two games the singer-songwriter did not see her rumored boyfriend play, the Kansas City Chiefs star tight end averaged 46.5 receiving yards (it should be noted he returned from a knee injury in one of those games, and briefly left the other with an ankle injury).

Meanwhile, in the four games she did attend, he put up an average of 108 receiving yards.

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Taylor Swift smiles big split Travis Kelce laughs

Taylor Swift and Travis Kelce are still in the "very new" phase of their relationship, according to a source. (Hector Vivas/TAS23/Jason Hanna)

Of course, Kelce isn't performing well because of Swift — he had the best year of his Hall of Fame career last season in which he earned his eighth straight Pro Bowl nod.

But one of the NFL's other superstars in Dallas Cowboys linebacker Micah Parsons says Kelce has added "swagger" and "confidence" when his rumored "bad girl" belle is at the game.

"Travis Kelce's my boy. The best tight end in the league for like, the past three, four years. So it's obviously not Taylor Swift, but I'ma tell y'all one thing: When there is a bad girl and she's in attendance and she's watching you, that gives you an extra boost of confidence," Parsons said on his podcast

Travis Kelce gestures

Kansas City Chiefs tight end Travis Kelce. (AP Photo/Ed Zurga, File)

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"When you pull up to the gym, and your girl's with you, I don't care who's in front of me. Like, without a doubt in my mind, [NBA star] Kawhi Leonard could be in front of me, I gotta give him 30 [points]. I refuse to go in that car on the way home and my girl's talking about, ‘Damn, he dropped you off today, huh?’ Nah, that's not happening. So you know what Kelce's doing. I know what's going on. He was already doing it. So now, it's like, ‘Yeah, I’m gonna do it more now. It's a swagger, it's a confidence when those things happen."

Kelce has gone off in his last two contests, combining for 21 catches and 303 yards. His 179 yards in the Chiefs' 31-17 win over the Los Angeles Chargers on Sunday were the second-most of his career. In the previous four games, he had 27 catches for 222 yards.

Travis Kelce and Taylor Swift holding hands

Kansas City Chiefs tight end Travis Kelce and singer-songwriter Taylor Swift leave after the game between the Chiefs and the Los Angeles Chargers at Arrowhead Stadium in Kansas City, Missouri, on Sunday. (AP Photo/Charlie Riedel)

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Maybe it's Swift… maybe it's being fully healthy after two leg injuries… maybe it's his dominance on the field since his first Pro Bowl in 2015.

Whatever it is, Kelce is not slowing down anytime soon.