What episode is it when Doug and Carrie take a quiz about common interests between them and find out they don't really have any? But then they realize all that really matters is they truly love each other.

Any help would be great.

thanks

"Business Affairs" - Season 5, Episode 6

This is the one where Doug gets jealous of Carrie's gay "work husband" Kurt so he adopts Deacon as his "work wife".