2. Do it in a different way. How many different positions have you tried? You can pick up a guide to sex positions and try them with your boyfriend. The Kama Sutra lists scores of positions—some may leave you laughing, but you might find a handful that absolutely bliss you out. You could also read up on tantric sex, which focuses on techniques to slow sex down, how to enhance orgasm and how to savor every moment of sexual contact. Of course, you could just come up with your own positions. Try propping pillows under your hips for a better angle of penetration; make love side by side or standing up; have him sit in a rocking chair and lower yourself onto him gently, then let the chair rock you to orgasm.

3. Do special sensual things. A lot of people define sex as intercourse and oral sex and leave very little time for all the relaxing, intimate fun lovers can enjoy together, in and out of bed. Do you give each other massages or foot rubs? Have you fed each other chocolate in bed or sipped wine from the same glass? Has he ever run a rose petal over your body? Have you ever scrubbed his back in the tub? Maybe he could give you a pedicure. Sensual intimacies like these will wake up your passion in a hurry!

4. Do more exciting things. Sometimes the real reason passion diminishes in a relationship is because one or both partners would rather be doing something else in bed. For example, maybe you wish your boyfriend spent more time kissing your breasts or giving you foreplay; maybe he wishes you would initiate sex more or give him more oral sex. Maybe neither of you wants to admit that the stuff you have been doing isn't as thrilling as you need it to be because you're afraid of hurting the other's feelings. Put your cards on the table and let him know if there's something more or different he could do to enhance your pleasure. Repressing your needs will only leave you frustrated.