SOME people say no simply because they
want to be conquered, to be taken, it is part of their "thing," and the token resistance they put up at the beginning will dissolve into lovemaking fury once they have been "captured." This is a valid thing and is completely ok between consenting adults.
HOWEVER...much like
Extreme Kidnapping, it's hard for the parties involved to simultaneously know that it's all legit AND have the full experience, since once you know it's just a "game," it loses quite a bit of its power. Also, the chance of misinterpretation is uncomfortably high, meaning that it's possible to accidentally get involved with someone who legitimately
didn't want this to happen, and that is embarrassing and potentially illegal.
SO: If (s)he says no, it's safest to assume that (s)he means no, and not force the issue. If that person was genuinely turning you down, it's win-win for both...you still get to hang out with that person even though you might not end up making out. Also, if that other person was saying "no" just to be coy, they have nobody to blame but themselves (i.e., if you want A, ask for A, not B and just hope they "figure it out"). If they were one of the thrill-seekers I mention at the start of this post, there are places and times for that sort of thing, and if you want to do it, you go to those places at those times. When you hang out at a taxi stand hoping to catch the bus to thrillsville, you got nobody but yourself to blame when all you get are taxis and no bus. It's not the bus driver's job to "know" you're waiting at the taxi stand.
--Patrick