Rob McElhenney cast Kaitlin Olson on It's Always Sunny in Philadelphia after meeting her at a casting call. They began dating in 2006, kept the relationship private for a time, and married on September 27, 2008, in Malibu. The couple has two sons, Axel Lee (born September 1, 2010) and Leo (born April 2012). They remain married.
- How they met
- They met during casting for It's Always Sunny in Philadelphia when McElhenney cast Olson; they began dating in 2006 while filming the show's second season.
- Children
- Two sons: Axel Lee (born Sept. 1, 2010) and Leo (born April 2012).