OMG. What did you not get about the explanation regarding that question? http://www.sciforums.com/showpost.php?p=2109628&postcount=41
Oh, I get you all right. That post was hypocritical and full of shit.
Because of this social structure, there is no reason for me to see a promiscuous boy in the same light as a promiscuous girl. A boy can sleep with different girls, and still have high standards in his choices. A girl who sleeps with different guys means she has low standards. A person with low standards is not very attractive.
Sperms go for egg. Sperm that reaches the egg is the winner. Guys that get the girl is the winner. Getting more girls is not going to make him look worser. Egg will get the winnder sperm. Girls getting a guy to sleep with is not a huge task. Girls sleeping with lots of guys means she is not very selective.
A promiscuous male can have high standards but not a promiscuous female? Your logic needs some fucking Superglue.
The second part is rubbish. Girls who sleep with loads of guys are not doing it to have babies. They're doing to for pleasure. Just because they are serial monogamists doesn't mean they won't be selective when choosing an actual life partner as opposed to a quick fuck.