Before proclaiming the words “Marriage between a man and a woman is ordained of God, and the family is at the center of the Creator's plan for the eternal destiny of His children” President Gordon B. Hinckley addressed the woman of the Church with these words; “With so many sophisms passed off as truth, with so many deceptions regarding norms and values, with so many flattery and temptations to take on the slow stain of the world, we felt we must warn and forewarn.” As we approach the 20th anniversary of the Proclamation to the World on the Family, it is clear to prophets and other Church leaders that the family and its fundamental values ​​are under attack. A significantly strengthened platoon that aids this attack is the practice of coexistence. A once unusual experience has quickly become common practice among Americans. Between 1965 and 1974, only 10% of couples who married cohabited before marriage. In just 20 years, however, this percentage has increased to over 50% in 1994 (Smock, 2000) and today it is around 60% of newlyweds living together before the wedding night (Oaks, 2013). Researchers have also found that two-fifths of all children will spend part of their childhood in a cohabiting family (Smock, 2000). Because of the harmful effects that cohabitation can have on the emotional and economic well-being of the individual, the well-being of the child, as well as the spiritual ramifications, I believe that the practice of cohabitation is the greatest attack on the family today. One of the main reasons why people choose to cohabit rather than start a marriage first is the idea that living with a partner before marriage can help in choosing a spouse who will increase emotional and economic well-being. While common sense would suggest that this “test drive” before marriage would be a good indicator of a happy life