Allright. So everyone has started asking me this question. For the most part, I don't feel bad saying no. We have limited space (max 175 people) and I have no problem telling people that if they want to bring some random date. Our rule is no dates unless you're married, and we thought that was fair. The tough part is the people we know who have been dating for 3 or more years. Prime example; my fiance's cousin has been dating the same guy for about 7 or 8 years, and apparently they never want to get married, which kind of defies our rule. What do we say?