If you marry a German citizen, you are not automatically entitled to German citizenship. However, spouses of German citizens are permitted to apply for citizenship by naturalisation much sooner than others: usually after two years of marriage.If you marry a German citizen, you are not automatically entitled to German citizenship

Is a German marriage valid in the US?

If a U.S. citizen marries a German citizen, he or she does not acquire German citizenship, nor does the German citizen acquire U.S. citizenship. If you wish to live in the United States after marrying, the U.S. spouse will need to apply for an Immigrant Visa on behalf of the foreign spouse.