Men do it, so why shouldn't women? I'll admit that I've fucked a girl in the past without knowing her last name. I have also made out with a few girls where I didn't even know their first name. I was young, single and horny, so I made the most out of it. I picked this particular girl up at a fraternity keg party one night and we went back to my place to have sex. We must have had sex 5 times that night (I was much younger back then) and we got together a couple of other times just to have sex. At the time I wasn't looking for a wife, so I enjoyed the casual nature of that relationship. I didn't find out her last name until about 6 months later; long after we stopped getting together for sex. Now that I'm married and settled down (and 100% monogamous) I look back on my care free single days and smile. I wouldn't want that lifestyle now, but it's a fond memory!