Coupling

Season 1, Episode 1: The Right One (a.k.a. Flushed)

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It's lust at first sight for Steve when he is reintroduced to his best friend, Jeff's, co-worker, Susan, smack dab in the midst of trying to tear one off with his bisexual, threesome-loving girlfriend, Jane -- whom he intended to dump before she played those two cards. They all have a lot of baggage, what, with Susan's best friend, Sally, now coupled with Susan's former fling, Patrick.