Taylor Swift was already at the "meet the parents" stage of her relationship with Travis Kelce ... and it turns out she's getting cool with his buddies, too -- 'cause Patrick Mahomes just revealed he got to chop it up with the singer at the tight end's postgame party on Sunday.
The Kansas City Chiefs superstar was asked about Kelce's recent super VIP guest at Arrowhead Stadium after practice on Wednesday ... and while he initially said days ago he hadn't met Swift yet -- that has since changed following TK's shindig at Prime Social in K.C.
"Yeah, I met her," Mahomes told local reporters. "She's really cool, good people."
But Patrick wasn't super chatty about the subject ... echoing Kelce and saying he's going to keep it to talkin' football moving forward.
"But like Trav said, man, I'm going to let them have their privacy and just keep it moving," the two-time MVP added.
As we previously reported, Swift and Kelce -- who hung out a few times in intimate settings before Sunday's game -- were a bit closer at the postgame party ... with TS putting her arm around the four-time first-team All-Pro's neck.
Travis has since opened up about Taylor during his "New Heights" podcast ... calling her "ballsy" for hitting up the game with his fam and deeming it a day he will never forget.