South Carolina's "If a man seduces a woman and promises to marry an unmarried woman, the marriage must take place."
Title 16 - Crimes and Offenses
CHAPTER 15.
OFFENSES AGAINST MORALITY AND DECENCY
ARTICLE 1.
MISCELLANEOUS OFFENSES
SECTION 16-15-50. Seduction under promise of marriage.
A male over the age of sixteen years who by means of deception and promise of marriage seduces an unmarried woman in this State is guilty of a misdemeanor and, upon conviction, must be fined at the discretion of the court or imprisoned not more than one year. There must not be a conviction under this section on the uncorroborated testimony of the woman upon whom the seduction is charged, and no conviction if at trial it is proved that the woman was at the time of the alleged offense lewd and unchaste. If the defendant in any action brought under this section contracts marriage with the woman, either before or after the conviction, further proceedings of this section are stayed.
Virginia's "No oral or anal sex allowed."
18.2-361. Crimes against nature.
A. If any person carnally knows in any manner any brute
animal, or carnally knows any male or female person by the
anus or by or with the mouth, or voluntarily submits to
such carnal knowledge, he or she shall be guilty of a Class
6 felony, except as provided in subsection B.
B. Any person who carnally knows by the anus or by or with
the mouth his daughter or granddaughter, son or grandson,
brother or sister, or father or mother shall be guilty of a
Class 5 felony. However, if a parent or grandparent commits
any such act with his child or grandchild and such child or
grandchild is at least thirteen but less than eighteen
years of age at the time of the offense, such parent or
grandparent shall be guilty of a Class 3 felony.
(Code 1950, � 18.1-212; 1960, c. 358; 1968, c. 427; 1975,
cc. 14, 15; 1977, c. 285; 1981, c. 397; 1993, c. 450.)
Although, to be fair, this is technically no longer a law in Virginia. It was repealed in 2003 by the US Supreme Court in Lawrence v Texas. The key word in the first sentence is "technically" as Virginia does not recognize the fact that it has been repealed. In other words, cops are still going out and arresting gay men for sodomy, only to have a judge overturn it due to Lawrence v Texas. The above law is actually, I believe, the "newer" version of the law passed after Lawrence, which like the old version is unconstitutional. Arrests are still being made though, with the sole purpose to intimidate and harass.
Of course, now the "Cooch" is giving the quiet green light to the arrests as well. Read more about that
http://www.bilerico.com/2010/03/cuccinelli_gay_acts_are_a_detriment_to_society_end.php">here.