IT’S ALWAYS SUNNY IN PHILADELPHIA “Mac and Dennis Break Up” Season 5 Episode 9 November 11, 2009 It's Always Sunny In Philadelphia IT’S ALWAYS SUNNY IN PHILADELPHIA Mac and Dennis Break Up which airs on Thursday November 12 at 10pm on FX. Episode Synopsis: IT’S ALWAYS SUNNY IN PHILADELPHIA Mac and Dennis Break Up – Relationships are put to the test when Mac and Dennis decide to spend some time apart. Meanwhile, Charlie lends his feline expertise to help Dee find her cat that she misplacedin the wall. Watch any It’s Always Sunny in Philadelphia episodes here. (Photos: Courtesy of FX) Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Google+ (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pocket (Opens in new window)