Guys will eventually think about you as a partner, even if just out of curiosity. We're wired like that. If you manage to spark interest later on(yes, it is doable with guys, even if it remains hard), a guy is able to "rethink" his position.
As far as I know, be it from hearsay or from experience, girls don't do that later in a social interaction. The window in which she is able to consider you a possible relationship partner is quite narrow, and if you miss it you can't really go back (there are exceptions, but they are rare, and most of them go terribly wrong).