Kaitlin Olson and Rob McElhenney
Kaitlin Olson and Rob McElhenney first met one another on the set of It’s Always Sunny in Philadelphia. They began dating in 2006, keeping their relationship secret for about a year, even keeping their co-stars in the dark. Two years later, they got married in 2008. They have two sons together.
LeAnn Rimes and Eddie Cibrian
When LeAnn Rimes and Eddie Cibrian met in 2009 while on set for TV film Northern Lights, they were both married to other people. However, they were drawn to one another and though the beginning of their relationship was surrounded by controversy, they have both stated that they do not have any regrets though they hate that people got hurt in the process. They got married in 2011.