Marriage doesnt really mean anything... If they werent meant to be together... Even after they get marry, they would then get a divorce... It's just sorta like a commitment... Well, I believe sex before marriage is no big deal as long as you are planning to marry to the person you had sex with... I dont see any real problem having sex before non after...
I don't see anything wrong w/ sex before marriage, as long as proper protection is used. And I don't mean life vests and/or parachutes...those will not help you.
I think that as long as the love is true between the couple it's alright~ im not really one of those casual sex with anyone type of people