Marriage:
The union of a French national and a foreign national does not confer French nationality on the foreign spouse.
However, in order to obtain French nationality, a foreigner who has married a French national must meet one of the following conditions:
The couple must have been legally married and have resided in France for at least 4 years. At the time of the procedure, the cohabitation must be permanent and the French spouse must have retained his or her French nationality;
The couple must have lived together outside France, legally married, for at least 5 years. At the time of the application, the cohabitation must not have been interrupted and the French spouse must have retained French nationality.