pipeman84
Master Don Juan
You're confusing fast sex with high interest. Fast sex has mostly to do with the woman, it's enough for the guy to look presentable (ie not have a beer belly, rumpled appearance and BO) and none of the reasons that make it possible such as: rebound, getting bored with her dildo, trying to overcome her low self-esteem with the fact that she's desirable to men etc etc do her any favor.Actually it means none of those things...simply that a woman isn't that into you.
She could very well be into you, that was the reason why she went on a date to begin with (particularly so if it's started in real life, not OLD, because she got more info by looking at you in person as compared to 4 photos). But along the dating process, some issues just cropped up and she realized you two aren't really compatible. Sex isn't an activity that magically allows her to peer into the man's brain or see into the future.
Consequently, when you hear a woman who says for instance: so last year I dated a couple guys for a few months but 'it didn't work out' and after further probing it transpires she slept with them ... the translation of that is: she's either dumb or/and a slut, otherwise she'd have figured it won't work out before sex.