I once was surfing radio channels and happened upon a discussion about premarital sex. This young guy called in and made an argument for chasity that I'd never heard before.
He said he'd decided to stay a virgin until marriage b/c he felt it gave him the best chance of really getting to know his potential wife and knowing whether they could work together to make marriage work.
He said once sex was part of the relationship, it tended to cover up a lot of weak or negative things in the relationship; it tended to be a way to gloss over problems rather than actually communicating with intelligent discussion about the problem.
He also said one other thing that surprised me, but made sense as I thought about it. He said that he figured that in all relationships there would come a time when sex wasn't as important as it was initially---he talked about as people got older, busy with children, etc. He said if he loved his wife enough to marry her before they had sex, he figured he'd love his wife enough to get through the stretches when sex once again wasn't such a big part of life, for whatever reason.
He ended by saying he knew so many guys who, when the relationship became more about the relationship and less about sex, said, "I like this girl why?", and he didn't want to be in that boat after he was already married.
Your future wife will be a blessed woman, I believe.