Taylor Swift kicked off the latest leg of her "Eras" tour without her boo in the crowd -- Travis Kelce was busy showing love for his best friend, Patrick Mahomes, at his charity event on Thursday instead.
The Kansas City Chiefs superstar was front and center for his quarterback's "15 and the Mahomies Foundation" bash in Kansas City ... which is about 5,500 miles away from Argentina -- where Swift kickstarted her string of international concerts.
There are reports Kelce will make the long trip to check out one of his lady's gigs during the Chiefs' bye week .