Wikipedia
Wirtz's parents are his agents; his father, Hans-Joachim, is also chairman of Grün-Weiß Brauweiler, the club that Wirtz played for as a child before joining Köln. Wirtz has nine siblings, four brothers and five sisters. His older sister Juliane is a professional footballer as well. Wirtz has been dating model and influencer Aaliyah Cloßen Mohamed since about 2022. The relationship has generated minor controversy given the fact that Cloßen Mohamed is Muslim, while Wirtz is not.
https://en.wikipedia.org/wiki/Florian_Wirtz