Start looking for other women and stop paying so much attention to her. Start talking to and going out with other women, and only use your current g/f for sex. As I've said many times, women are like jobs; always easier to get when you have one already. Just keep her around for sex, so you won't seem like you're starved for sex when you're talking to new women. When you find another girl, cut the cord on this one and kick her out(assuming you pay the rent).