By Andrew Holleran For some reason, Patrick Mahomes’ relationship with his fiancee, Brittany Matthews, has become a popular topic of discussion on social media. Mahomes and Matthews have been dating since high school. They have a kid together and got engaged prior to the start of the 2020 season. Matthews and Mahomes’ brother, Jackson, are quite active on social media, often causing reaction from fans and the rest of the NFL world. Wednesday night, Mahomes and Matthews were sitting courtside at a Texas Tech basketball game. A video went viral. Mahomes responded to the video, defending his fian…