Last attempted enforcement?

2006.

"As reported earlier, the case arose when the Sheriff of Pender County hired an unmarried woman, Deborah Lynn Hobbs, as a police dispatcher. About two weeks after she was hired, the Sheriff learned that Ms. Hobbs was unmarried and had lived with her boyfriend for nine years. Charged with enforcing the laws of the State of North Carolina, Sheriff Carson Smith informed Ms. Hobbs that she was living in violation of North Carolina’s cohabitation law and that she must marry her partner, move out of their common home, or leave the employment of the Sheriff’s office. Sheriff Smith did not bring charges, nor did he threaten to do so, under N.C. Gen. Stat. § 14-184. Ms. Hobbs chose to leave her job and then filed suit seeking both declaratory and injunctive relief from North Carolina’s cohabitation law."

http://www.ncfamily.org/stories/060914s1.html