Living together, also known as cohabitation, is the practice of two people who are not married to each other sharing a household and a sexual relationship. Living together is becoming more common and acceptable in many parts of the world, especially among young and urban people. However, in Nepal, living together is still a controversial and sensitive issue that raises moral, social, and legal questions.Living together is not a new phenomenon in Nepal. In some ethnic groups and regions, such as the Nyinba of Humla district and the Loba of Upper Mustang region, living together has been a traditional and customary practice for centuries. These groups practice fraternal polyandry, where a woman lives with two or more brothers as her husbands. They do so for economic and social reasons, such as preserving land and property, controlling population growth, and ensuring family welfare.