Adultery

UPDATE: REPEALED in 2014, 44:1, effective January 1, 2015
Thanks, Rep. O’Flaherty and Rep. C. McGuire!

Adultery is punishable in New Hampshire as a class B misdemeanor crime:

CHAPTER 645 PUBLIC INDECENCY

Section 645:3  Adultery. – A person is guilty of a class B misdemeanor if, being a married person, he engages in sexual intercourse with another not his spouse or, being unmarried, engages in sexual intercourse with another known by him to be married.

http://www.gencourt.state.nh.us/rsa/html/lxii/645/645-3.htm