I'm guessing in order to get a girl to be your gf, you have to be her friend first for a long time, or you have to be in the same social circle as her, so she has interactions with you or knows you for a couple of months.

Girls that you pick up in a bar/club/party, will probably have sex with you once or even a couple of times and then they stop seeing you, because they don't think of you as a high value guy who can be their bf. You are just some stranger to them. They never become your girlfriend.

Is my guess true?