Best friends Lizzie and Sam both disappointed in love, prowl the nightclub scene together.

Sam deals with some tough competition for Richard, Lizzie conducts some undercover work.

Lizzie and Sam head to a Mexican joint together on college night.

Sam breaks out the heavy artillery when her noisy neighbors interfere with her plans.

Lizzie and Sam learn a new way to get what they want from men, which leads to a competition.

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HD. 'The Cheating Rule.' (Season One) The girls decide to get even after witnessing what appears to be Kaylie's boyfriend hooking up.

HD. 'The Bi-Guy Rule.' (Season One) The girls seek help from Tyler when Sam can't figure out if her hot new project partner is gay or not.

HD. 'The Unavailable Rule.' (Season One) Lizzie and Sam get a surprise visit from the mentor Sienna who plans a phony bachelorette party.

HD. 'The Pill Rule.' (Season One) Sam's first foray into mood-enhancing drugs leads to a bizarre night with Richard.

HD. 'The Getting His Attention Rule.' (Season One) Sam begins to question 'the rules' after they land a visiting Sienna behind bars.

HD. 'The Revenge Rule.' In the Season One finale, the girls find themselves at a crossroads after an argument.