Many people believe that living together before marriage is a good idea because it helps couples test out whether they are a good fit and ready for marriage. Is he too messy? Does he leave the toilet seat open? Is her mother too involved? Is she a neat-freak? Can we manage finances well enough together? Many think that cohabiting will teach us something important about each other that we need to know before tying the knot. It’s counterintuitive then that some research indicates the living together before marriage, particularly before engagement, is associated with higher risks for divorce.