I remember reading this article with my fiance who is now my husband.
In summary, the most important aspect of a godly relationship is communication, before and after marriage. Communicate with G-d concerning your desires (after all, He created them, and He knows that you have them!), and communicate with your partner. Even a force as powerful as sexuality cannot withstand the united force of G-d, a godly man, and his ezer (strong helper) by his side (that would be you)...
"If you are close when you should be distant, you will be distant when you should be close."