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For most the ideal spouse tends to be similar in age, social status, and physical appearance. But some marriages stray so far from this ideal, they might be considered "odd." Taboo examines some of these unconventional relationships. We'll meet a woman who's in love with a man nearly three times her height. Then, find out why a man hides his homosexuality, promising to love and obey his wife. And we'll delve inside the inner workings of a marriage made up of three partners.