For most people living in major American cities these days, the idea of an unmarried couple living together is as controversial as toasted bread. Since the 1990s, more than half of married couples in the United States live in sin before getting married. The percentage of people who disapproved of unmarried cohabitation has dropped from 86 percent in 1977 to 27 percent in 2007. In fact, for most of us, it seems far more suspicious to see a couple moving in together after they’ve gotten hitched than before. So how is it possible that living with your boyfriend or girlfriend is still against the law in Michigan and several Southern states?