ltcvnzl wrote:
for sexual i mean have sex on first dates, seem to enjoy it a lot and are open about things considered "taboo".
do guys really make difference between this kind of girl as someone to have fun and more "pure" girls as girlfriend?
it doesn't make sense but it seems to be a common sense
This can depend on a lot for example what is meant by "have sex".
There are supposed to be heterosexual people in their 20s in the Western world who routinely hook up with others they meet in clubs and have one night stands. I have to assume such people are a.) very attractive physically and b.) very adept socially. For the rest of us, this isn't a realistic scenario.
Then there are certainly some women who are indiscriminate about whom they will have sex with due to low self esteem, loneliness etc. I don't know how many but certainly some, however such women don't really fit your description because one assumes they don't necessarily enjoy sex but do it to fulfill some other psychological need.
If a guy makes a date with somebody he just met and they end up having sex because they find themselves mutually attracted, he would have to have a serious problem (religion, misogyny) to think less of her for that reason. OTOH he will probably want to keep seeing her in fact such a situation could easily lead to a LTR. Or those two people might not decide to become a couple, but still sometimes meet for sex. I think some amount of casual sex in one's life can be a great thing, but it seems just as likely to involve acquaintance as to occur on first dates.
If you go on a date and feel a mutual physical attraction, you shouldn't be afraid to do something sexual with the guy. Even tongue kissing is sexual, in my opinion, or you can "go further" if you're comfortable doing so. But (thinking out loud here) I would hope that in such a situation you at least have some reason to think the guy will want to see you again.
EDIT after thinking about this — so far as most guys on this forum are concerned, I would say the vast majority who are not in relationships are fairly desperate, and if a girl had sex with them and said she enjoyed it, if they felt any degree of physical attraction to her, would be hard pressed not to like her. However (and this could be the issue) those same guys would not necessarily fall in love with such a girl. But "dislike"? Definitely not.