Hmmmm, I'm starting to think you're situations a bit diff to what I'm talking about...
So basically what you're saying is that even if you have explicity said that you're not interested in anything but casual fun, you are open to it becoming a relationship if that connection is right?
Isn't that kind of a mixed single?
Every girl, is basically just going to try and be/think they are THAT girl who you choose to go that step further with. Who you had that connection with.
I think that's why all the 'casual fun' I've had has been with friends or people I know. You both KNOW that it's not about either one of you looking for a boyfriend/girlfriend.
It's a bit more complicated to date someone AND try and claim there's no possibility of a relationship.
You ask a girl on a DATE, and don't sleep with her until the third date... Well you're not particularly acting like someone who just wants just sex, I must admit. You're acting like someone who wants to date a lot of women until he finds the right women to 'sweep him off his feet'