I've got to say, that while I respect anyone's right to believe and practice as they choose, I REALLY wonder about a couple who believes God will condemn them for vaginal sex before marriage, but anal sex is totally fine with the Heavenly Father as an extramarital activity. Does anyone actually worship an omnipotent, omnicient, omnipresent deity who can be tricked by a loophole? Either sex should besaved for marriage because sexual relationships are sacred and ordained by God to be for marriage...or not. I am saying not, but I won't judge (or date) someone who says they are. Those who skirt the edges and debate which orrifice or exactly how many inches of vaginal penetration God meant? Come on, it's like being a little bit pregnant, you can't "sort of" save yourself for marriage!
In high school, I met a guy like this, He was very pious and self-righteous in his loud proclamation that he and his girlfriend were saving themselves for their wedding night. He was 16, as was I. Now, we got to be part of a group of friends and we got to talking...and this guy was giving and receivig oral, grinding with no clothes on, giving and receiving hand jobs. Basically, he was more sexually active in "abstinance" than the vast majority of 16-year-olds who AREN'T "saving themselves" for anything. I decided his God was a lot more hung up on semantics than my God, because in my mind the right action with the wrong spirit wouldn't count for anything. But I am a weirdo who believes that God created love and sex because He wants us to be happy.
