I would like to point out the matter of marriage within this 'no sex before marriage' rule which is a favorite point for conservatives right now. And it is this: marriage, historically speaking, was about property and lineages. It had little to do with love. It was about making an alliance with another family to amass power as well as wealth.
So what does this say about no sex before marriage? I would say that it has a lot to do with enforcing gender roles which keep men in power over women.
So, I ask you: who is this 'rule' for?
Be the love you seek.