oneitis is when you place unwarranted importance on a woman.
An AFC goes to the bar and falls for any HB that will talk to him, and convince himself she is different from all the other girls and that she is someone special to him.
If you are in a relationship placing importance on a woman is not oneitis. If a girl is resisting sexual advances it is not ALWAYS a direct correlation with the way she feels towards you, but that is the general rule.
If you have to sleep with a girl to want to hang out with her, then you're not hunting down girls worth hanging out with. Hanging out with a girl to get in her pants is oneitis. It puts her in a position of control before there is any real connection.
You should only hang out with a girl if you enjoy hanging out with her. You shouldn't expect any ass out of the situation, and trying for it only puts her in a higher position.
It's important to screen heavily before a date as well. While you should meet a woman's standards for a boyfriend, she should meet yours as well. Begin with the end in mind. Make sure the girl you're pursuing has what you want, and make sure YOU KNOW WHAT YOU WANT before you decide that "she" is it.
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