Any motion to modify or terminate alimony or postseparation support based on a resumption of marital relations between parties who remain married to each other shall be determined pursuant to G.S. 52-10.2.
As used in this subsection, cohabitation means the act of two adults dwelling together continuously and habitually in a private heterosexual relationship, even if this relationship is not solemnized by marriage, or a private homosexual relationship. Cohabitation is evidenced by the voluntary mutual assumption of those marital rights, duties, and obligations which are usually manifested by married people, and which include, but are not necessarily dependent on, sexual relations. Nothing in this section shall be construed to make lawful conduct which is made unlawful by other statutes.
N.C. Gen. Stat. § 50-16.9