We've talked about the importance of being a good lover. But possessing genuine physical desire for your partner is also a major turn on. Women love to feel sexy, and to see that you struggle to keep your hands off of her will increase her interest in you even more. If your woman drives you wild, you'll be a naturally better lover to her. You'll want to please her in every way possible and the feeling will probably be reciprocated.
If you're not feeling the sort of physical desire that you should be feeling toward your sexual partner, maybe it's time to mix things up a bit. Sometimes even bedroom time can become a routine after a while. If there's a problem, the sooner you discuss it openly, the sooner it can be fixed. Don't let things get boring in bed!