You need a challenge... someone to really catch you off guard. This has become a far too predictable game for you. I've noticed that people who have successful longterm relationships are with those who keep them interested, guessing, and even, dare I say it, feeling young.
I think when you meet a girl who doesn't fall for your bullshit... ignores you... then eventually learns to tolerate you on a 'friends-only' basis... and just gives out just the tiniest hope of getting somewhere with her... you'll be here posting about what a wonderful, mysterious, and intelligent girl you simply must have. If she can not only counter your tactics... but throws a few of her own your way... you'll probably be in ecstacy...
However, she'll also have to be the kind that keeps you on your toes, especially after a relationship has been established. Not a bitch per se, just a little smarter than you... a little quicker to beating you to the punch... but slow enough to give you hope that you'll win... and maybe even have you win against her... in both the bedroom and in the battle of the minds.
Face it... you're not being satisfied completely... there's more to sex than the thrill of the chase and ****ing... The largest sex organ is the brain... and it isn't being properly stimulated.
"The weakest soul, knowing its own weakness, and believing this truth that strength can only be developed by effort and practice, will, thus believing, at once begin to exert itself, and, adding effort to effort, patience to patience, and strength to strength, will never cease to develop, and will at last grow divinely strong."
- James Allen