TO a woman, size does matter. But it's not the size you're thinking of. What women really care about is the length of the list of former lovers, which is usually either too many or too, too many. No matter how sexually liberated (or liberally sexual), most women believe that the number of guys they've had sex with (the average being somewhere between 7.2 and 10.5, depending on the survey) really does count.
"I've had nine sexual partners, but I tell my boyfriend that I've only had three," she says. "I don't count some of them since they only happened once, and why should I risk him telling him and having him think I'm easy when I can tell him otherwise?"
This article begs the question, do you ask? And, if so, what is it that you are trying to establish? My guess is that if you are really into her, the answer probably will have no effect on you at all. If you aren't that in to her, you'll break up at some point anyway so why bother?
My suggestion? Since she's probably going to tell you only what she thinks you want to hear, picture a number in your head that you think is acceptable. Then convince yourself that this girl has been with that number or fewer.