i'm not real read-up on premarital sex in the bible, mainly because i don't think its a real issue that should matter. what should matter is whether the act is sown in loveless lust, or not. i think marriage isn't so that God will recognize it, but so the church will recognize it. so with that said, if a love is true, then what difference should it make if its before or after marriage? god will recognize it regardless, he's omni-everything.
1 Thessalonians 4:3-4 "It is God's will that you should be sanctified: that you sholuld avoid sexual immorality; that each of you should learn to control his own body in a way that is hole and honorable, not is passionat lust like the heathen, who do not know God;"
1 Corinthians 6:13 "Food for the stomach and the stomach for food-but God will destroy then both. The body is not meant for sexual immorality, but for the Lord, and the Lord for the body"
and here is where is talks about man and woman comeing together as one
Matthew 19:4-6 "Haven't you read" he replied, "that at the beginning the Creator 'made them male and female,' and said, 'For this reason a man will leave his father adn mother and be united to his wife, and the two will become one flesh'? So they are no longer two, but one. Therefore what God has joined together, let not separate."
I know I had a few more but I cant find them right now...
i realize that, and the second verse you suggested made sense. but i go back to idea that if the love is true and honest, than marriage wouldn't matter. i don't think god needs a ritual for him to recognize love.
i apologize, but i don't feel that someone's faith should be based on the inerency of the bible, it was afterall written by man. though it may have been inspired by god, not-perfect man still wrote it.