If you no longer want to continue your relationship with your spouse, you can file for divorce.
According to the law of the Republic of Lithuania, the marriage is terminated by the court or the notary. You should submit an application to a court of general jurisdiction (civil court) if you and your partner agree or do not agree to divorce, or on how to settle other aspects of your relationship, such as custody over children or the division of property.
If you both agree to divorce and you have no disagreements on other aspects of your relationship you can submit an application to a notary.