Character names: Dennis Reynolds & Caylee
Years dated in real life: 

On one particularly memorable episode of It's Always Sunny In Philadelphia entitled "The D.E.N.N.I.S System," Dennis Reynolds, played by the vastly underrated Glen Howerton, describes his six-point foolproof system for seducing women. When the plan works, he refers to it as "Dennising" a woman. In this episode, which is arguably one of the hysterical series' best, the woman that gets "Dennised" is a local Philly pharmacist named Caylee, who's played by the gorgeous Jill Latiano, Glenn Howerton's real life wife of over three years.