In 2003, by chance, Klose met his wife Sylvia, a beautiful Polish German girl. At that time, Sylvia was a staff member in the fan shop of Kaiserslautern Football Club. The couple got married at the end of 2004, and their combination also broke the fixed marriage mode of "player+model" in people's minds. After marriage, Klose's gossip news can be described as "gossip insulator".
In 2005, Klose and Sylvia's twin sons Luan and Noah were born.