"This place is horrible."
That's Patrick Mahomes' girlfriend ... who says Patriots fans treated her like such crap at Gillette Stadium on Sunday, security had to physically move her to a "safe place."
Brittany Matthews and Patrick's younger brother, Jackson Mahomes, are regulars at Chiefs games -- but Brit claims their experience in New England was one of her worst ever.
Early in the Chiefs-Pats matchup, Matthews said, "As soon as we sit down, drunk dude 'hey everyone this is patrick mahomes girl and brother, let’s give them sh*t' This shall be fun.