Sheldon and Leonard go over the roommate bylaws now that Sheldon considers Leonard's new girlfriend a roommate and they have new rules to go over.
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The Big Bang Theory Season 2 Episode 10 Quotes

Penny: You don't always have to go along with what the woman wants.
Leonard: Huh.
Penny: What?
Leonard: Nothing... just re-thinking my whole life

Leonard: Every time I try to talk to her about moving out she cries, and we have sex.
Raj: You're lucky. With me it's usually the other way around