Inspired, take note of the attitude her bf has: she is 2nd in his life; she's expendable. Aside from being strategically viable in the sphere of mindgames, its also the necessary outlook to have on such relationships. That's what you need to emulate.
You are demonstrating that you feel they should come 1st in life ('her bf doesn't appreciate her!', you insinuate), and that attitude will get you cheated on and/or dumped excessively, if you continue it.
as far as education on women and you:
http://www.sosuave.net/forum/search.php?searchid=1149918
http://www.sosuave.net/forum/search.php?searchid=1149920
http://www.sosuave.net/forum/search.php?searchid=1149929
just read through their posts in any given thread; spend some hours doing it. Take their advice to heart, and ye shall be enlightened.