Wait at-least a month before having sex.
The best way to do this is to keep the holy spirit between you at all times! Just kidding. No seriously, don't have too much to drink at dinner and have to spend the night because if you're "sleeping" in the same bed, accidents will occur. If you're both able to wait until it feels right in your heart and not just in your body, then the sex will be more explosive when it does happen and your minds will be more connected when it's not happening.
You'll figure out whether the person is worth another getting another notch on your belt. In fact, you'll figure out much, much more about a person if you take the time to get to know them. Besides, sex doesn't necessarily create intimacy. When two people are truly committed to waiting it out, there's a certain bond that arises as a result and the imagination kicks into high gear, high eroticism, and high everything else.