First of, calling sex wrong, in any way, is idiotic and pathetic. Sex is for pleasure and procreation. It is NOT a sign of love. It is NOT a sign of bonding yourself with another. It is one of our animalistic instincts to fornicate.
If you WANT to wait, have your own damn reasons, not the Bibles. But if you don't, go ahead. As long as both are consenting, fine.