It's not a mind game. Not to them...
Women want emotional intimacy. Men want sex.
If she's not getting emotional intimacy, the sex will be sporadic because that IS nothing to her without that emotional intimacy. She's not happy with just physical.
Men think women are playing a game, but it only appears that way.
But to put it in those terms, Men play the game to get sex, women to get emotionally close.
There are other maturity issue's that come into play, but that's a basic you can count on.
Many Women also get great pleasure from being submissive, and when you are emotionally close, when they know you love them, trust your heart completely, holy schmoly, the things they will do for you...
Attitude is so important to pleasure, man, when my wife and I found out this stuff, it took a great sex life and made it just freaking rediculous.
Okay, don't know how common this is, for instance, but that emotional intimacy will take you cool places. My wife had the hardest orgasm the other day while she was so turned on by... err... well, no one was touching her, but parts of her mouth were touching parts of me that caused a protien release.
Give that girl more of your heart, show her love in a way she knows is sincere, get past the trust barriers, and she will be your love slave.