In another great installment of Gary Unmarried, Dennis' sister, Anna, was back in town after being dumped by her latest boyfriend.  When she tells Gary she's always had a crush on him, they end up hooking up.

How did Gary's best friend, Dennis, react to Gary hooking up with his little sister?  Find out in our "Gary and Dennis' Sister" recap and then enjoy some of the pictures and quotes from the episode.

Jack: Woh, deja vu
Gary: It's not deja vu, it's the fifth time you walked into the room! | permalink

Anna: I used to kiss my pillow and pretend it was you
Gary: What a coincidence, I used to kiss Allison and pretend she was anyone else | permalink

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