All the communication tools couples need to take their sex life to a new level. There you are, in the throes of passion, when suddenly, your partner shifts, just a tiny bit. Instead of plateauing, you begin to plummet. Communication is so important, but it's so difficult to tell your lover exactly what you want, exactly when you want it. Maybe you don't want to hurt his feelings, or make him think he isn't a good lover. Maybe...