Singer-songwriter John Rich married longtime girlfriend Joan Bush during a ceremony in Nashville on Saturday (Dec. 6), People magazine reports. Bush, a former model, owns First Class Models, a modeling agency based in Houston. The reception took place at Fontanel, Barbara Mandrell's former home which has been featured as Rich's base of operations in hosting CMT's Gone Country. Rich and Bush have reportedly been dating for more than five years. Rich is scheduled to perform solo concerts Wednesday and Thursday (Dec. 10-11) at the Las Vegas Hilton. He and musical partner Big Kenny Alphin will resume touring as Big & Rich in June.