why would I feel any different about her if it was the first or third date. It would also be my first or third date also.I don't think there shoul be double standards. lets be honest .
Hmm, after high school, I guess I have only had relations with women, not girls, because if we've decided to to be together as more than friends, the first opportunity we had we fucked/made love because we mutually wanted to and could. And, yes, more often than not that's the "first date" and every single "date" afterwards. I am a firm believer in that the vast majority of women KNOW pretty much within 10 min. or less if you're a man they want to sleep with or not. If she "thinks" you're doubtful of her "virtue" (whatever that means to her) and holds out for second, third, fourth "date", most men (unless they are desperate or silly) will think she's a cock tease and pass. Either you want to tear each other's clothes off or you don't. If you do, you'll find a place a time and a situation to do so without all the game playing, the "will she or won't she". Just my two cents worth.
My husband and I had sex on the first date, he would've disappointed ME if he hadn't made an advance!
Of the three long term relationships that I have had, one started with sex on the first date and another started with sex before the first date. The only thing I discovered was that if a relationship starts fast is that it will probably end fast as well. I don't think badly of the women because we had sex so quickly. The one that waited was just as crazy as the other two. The real problem wasn't how quickly we ended up having sex, the real problem is that I have bad judgement.
For myself it would encourage me to want to keep her around. At this point in my life I don't need a sexually repressed partner and if she is comfortable enough to jump in bed right away so much the better.
I do think it's an issue with younger people, especially if they have mutual friends. Younger guys are often emotionally immature and if his friends start thinking of her as easy the group mind effect will push him into disrespecting her.
That may anger some of the younger guys here but wait till you get older. You get to a point where you don't give a shit about perception.
At least wear some nice lingerie! 
Of all our inventions for mass communication, 
