Consequently, getting laid is seen as an achievement for men and gets respect, while consistently failing to do so is likely to elicit the scorn of one's peers. Is she finding men online? But then, would you be thinking "relationship" at all anyway, if the date was mediocre? I suggest that your friend's dates are not ruling her out as 'girlfriend material' because they had sex. It takes a lot of work, and you really have to put yourself out there and face a lot of potential pain and rejection. Depends on what mediocre means.
Now that I think about it, I had sex with an ex on our first date.
That will make most men think "well shit, this girl acts like her pussy is made of gold and discharges rubies once a month. I've had a few relationships that were basically just revolved around sex because we fucked right away but then took months to realize we have nothing in common other than physical attraction to each other. I'm not interested in getting the clap. If I'm willing to have sex with someone on a first date, I'd have to be kind of a shitty person to judge them for also wanting it. Not saying casual sex is anything to be ashamed of, but if we're going on a date then, to me, that says I'm looking for more than just a hookup.