When Dennis marries his high school sweetheart, he realizes he needs to get a divorce in "Dennis Gets Divorced."
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It's Always Sunny in Philadelphia Season 6 Episode 2 Quotes

You told me it was a phone bill. Of course, I signed it.

Charlie

Dennis: There's cab fare on the night stand.
Maureen: That's the third morning in a row you did that. We're married, silly, I'm home already.