“still just getting to know each other,” a source tells PEOPLE. “It’s nothing too serious.”

An insider adds that the pair haven’t yet defined their relationship, saying, “He is a charming guy. It’s more of a hanging out situation than dating.”

Though Kelce is spending time with Swift, “he’s focusing on football like he always has,” the source says. “During the NFL season, his priority is the Chiefs, and it’s all about the team.”On Sunday, Swift attended the matchup between the Chiefs and New York Jets, where she once again linked up with Travis’ momduring the game, which saw the Chiefs defeat New York 23-20 in a close finish.

They had initially spent time together in a suite at Arrowhead Stadium in Kansas City Taylor Swift Presented by Wave Sports + Entertainment, Travis shared how his loved ones were smitten by Swift after meeting her at the Sept. 24 game.

“I just thought it was awesome how everybody in the suite had nothing but great things to say about her — the friends and family,” he continued, adding that “everybody was talking about her in great light.”