By: xingmin E-mail: yao898@yahoo.com How many times have you heard that "Well, I think we should just live together first to see if we are compatible, and then we can get married." How many times have you saw the sight that the bride walked down the aisle who was already living together with her boyfriend. Nowadays, unmarried couples living together have increased dramatically over the past few decades. The rationale is simple: "By living together before marriage, we'll know how compatible we are. We'll find out the truth about a partner. We'll have greater opportunities to observe a par