Women like sex. Believe it!
One of the many damaging myths that our society passes on to boys and girls -- and which we then incorporate as women and men -- is that men want sex all the time, and women don't want sex almost ever. "Not tonight, dear, I have a headache." This sucks. Get over it.
Men, this means for you that when you're responding to a woman's ad on Craig's List or any other personals/dating site, you don't have to trick her into wanting sex. Especially if she's posting in the casual encounters section or has said something in her profile about wanting something lighter or less committed, she's probably telling the truth.
This is why responding to my CE ad by talking about how what you really want is to get married is going to mean that I will not, in turn, respond to you. No, it's true, I probably also will not respond to the guy who says he just wants to get together tonight, but there's a lot of room for compromise between those two positions. I encourage you to suss it out.
Women like sex. Sex is fun! We enjoy it! We may, in fact, be slightly more particular about the sex we get than many men are, but even on that one I'm not sold; I think that's something that varies a lot from individual to individual, irrespective of sex or gender. Men cheat themselves and the women they fuck when they buy into the myth that women have to be talked into a roll in the hay.
So, men, stop trying to trick women into your bed.
And while I'm at it, women, stop playing hard to get. This isn't helping anyone.
