Simpson, 34, revealed that she met the former NFL pro thanks to a setup from her friends Lauren and Bret Harrison. "Fortunate for these two @laurenz422 and @bretharrison for the unexpected intro #MAY21 #JOHNSON," she captioned a pic of her and Johnson dining with their pals.
The entertainer was a bridesmaid in the couple's March 2012 wedding and Lauren used to be her assistant.
The Dukes of Hazzard star was first reported to be seeing Johnson, 35, when the two were caught kissing on Italian island of Capri in July 2010. In July 2014 Simpson and Johnson were married in Montecito, Calif.