Any person who marries an individual who is or becomes a citizen of Malta is entitled to apply to become a citizen of Malta. Citizenship application is possible after five years of marriage, provided that such person is still married to a citizen of Malta or is the widow or widower of a citizen of Malta.
For a person to acquire citizenship based on marriage, such person should have lived with the Maltese person for at least five years before applying for citizenship.
For more information, visit:
https://identitymalta.com/acquisition-of-maltese-citizenship-by-registration/