Kaitlin Olson and Rob McElhenney met on the set of "It's Always Sunny in Philadelphia" and dated for two years before getting married. They welcomed their first son, Axel, in 2010, and another son, Leo, in 2012. - XFINITY Entertainment Staff
(Photo: Chris Pizzello/AP Images)
The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.