Cohabitation's when people live together in an emotionally and/or sexually intimate relationship. The term's most frequently applied to couples who aren't married. People may live together for a number of reasons. These may include wanting to test compatibility or to establish financial security before marrying. It may also be because they're unable to legally marry, because for example same-sex, interracial or interreligious marriages aren't legal or permitted. Other reasons include living wi… (More on Cohabitation)