It’s not unusual for desire to gradually wane after the white-hot flame of a new romance. To spice things up, try getting intimate in a room or location other than your bedroom, or using a toy and a sensation-enhancing gel, suggests Hutcherson. Occasionally hormonal shifts can interfere with your mojo as well—for instance, those that occur before your period. “They can cause irritability, breast tenderness, and bloating. and if you don’t feel well, you’re not going to want to have sex,” says Blakeway, so cut back on salt and caffeine and drink lots of water. But if the downturn has been sudden or seems severe, get a checkup: a thyroid disorder or depression could be to blame. Also ask your doc to review any medications you’re taking; many common ones, including birth control, can dial down your drive.