Individuals' growing desire for a long life relationship with a chosen partner and through whom lifelong relationships are a kinds of preamble for every unmarried adults in the world and young adults motive to make decision to which they should marry were determined by their own. Hence, mate selection is one of young adults preamble for future relationship, while cohabitation is the way of life of woman and man living together without legal marriage contract. However, the couples act as a husband and a wife in the community.