All that being said, some women aren't comfortable talking about their sexual tastes and might not respond well to a sit-down interview before shagging. If you make a couple of inquiries and she declines to answer, don't push the subject. The best way to ensure your partner will open up (verbally that is- come on mate, out of the gutter) is to make it clear that you're into her and wish to express that in a way she'll enjoy. Also, while questions during sex are extremely important to ensure you have consent (for every act) a constant stream of them can be distracting. Asking "Is this good? Am I the best you've ever had? Am I basically a god? WELL?" is not as attractive as you might assume.