Yes, you are falsifying legal documents. In some states there are specific penalties for getting married under false pretenses and even the individual performing the wedding can get into trouble. *Only if you are underage, in which case the identification documents required would be false and that would be the fraudulent act. FYI, all state's require proof of age, preferably a birth certificate and other documentation such as Social Security card, driver license or state ID, passport, etc. before a license will be issued.