Any person who commits adultery shall be fined at least twenty dollars.

61-8-3. Adultery and fornication; penalty.

If any person commit adultery or fornication, he shall be guilty of a misdemeanor, and, upon conviction, shall be fined not less than twenty dollars.

Adultery or Fornication results in a fine of $500 and/or 6 months in prison.

Adultery is illegal, but can only be punished upon a complaint by the affected husband or wife.

Any person who appears on any highway, or upon the street of any city that has no police protection, when clothed only in ordinary bathing garb, shall be fined no less than five dollars nor more than twenty-five dollars.” – KRS 436.140 (Passed in 1922; Repealed in 1974)

Unmarried couples who live together and “lewdly associate” with one another may face up to a year in prison.

You can be fined up to 100$ for using profanity in a public place.