He was telling the truth. There's a big difference in the divorce rates - people who live together pre-marriage are almost 50% more likely to get divorced than people who don't. There are a couple of caveats though - one, if the person who you marry is the only romantic partner you've lived with, then the chance of divorce is significantly lower. And, if the marriage lasts more than 7 years, then the difference between couples co-habitating before marriage and those who didn't is just about zero. Now this begs the question as to whether cohabitation is the reason for the higher divorce rate, or whether there are other factors involved - for example, cohabitating couples are less likely to be religious, and non-religious people have a higher divorce rate. They're also, on average, people of lower income, and divorce is higher among people with less wealth. There's also the social upbringing issue. Some would argue that these things have more to do with the higher divorce rate than the cohabitation itself. Right. Like I said, I never had seen the stat, but tended to believe the guy. However, my wife and I (girlfriend at the time) came to the same conclusion that there were many other factors likely contributing to said divorce aside from living together before marriage. Financial, upbringing, religious beliefs, etc.