Rob McElhenney told his co-star Glenn Howerton he was dating Kaitlin Olson in the most It's Always Sunny in Philadelphia way, and Howerton's reaction was very Dennis like in the most hilarious way too.

It's Always Sunny in Philadelphia' costars Rob McElhenney and Kaitlin Olson, who are married in real life, say his neurodivergent diagnosis was positive for them.

Costar Glenn Howerton, who lived with McElhenney, said Olson would suddenly be too drunk and need to stay over.