It's true that married sex is the best sex. "Marriage is a bright new beginning that often heralds a deeper dimension of a couple's sexual relationship," says Madeleine Castellanos, M.D, sex therapist and author of Wanting to Want: What Kills Your Sex Life and How to Keep It Alive. "But it would be a mistake to think that the beginning of this relationship encompassed the totality of each person's sexual expression."

To grow your relationship, Castellanos says, "ongoing communication about your sexual self is essential." Start with these six questions to get on the same sexual page and to "learn about each other's values and ideals," she says.