In my experience with women, it has been more they initially showed interest, but then backed out at the last minute just before things were about to go somewhere.
It seems deception is happening all too often. I've seen one too many times on Fronesic Files and Dateline, men (mostly) who have gone to the effort to create totally new identities behind themselves, to deceive and use people.
It would seem like the perfect person, the person of your dreams, just fell out the sky. They make fake IDs, have all these stories about how they are decorated war heroes; simply a matter of attempting to completely charm someone.
Perhaps a good way around all these lies and determining what someone's nature truly is, is actually to observe them when they don't know you are doing so (if you want to call that spying).
Bad example, but if you sneak outside someone's home at 2AM, and peer behind a bush, to observe the guy at dinner who claimed he was a saint, walk out of his front door, get into his car, and drive out to have sex with his mistress for an hour (when he steps out of his car when he returns home, he has panties around his neck, I think that's obvious enough), then that takes care of it, you know he's lying.
People don't usually put on acts when they don't think anyone is observing them.
For me (except for the one rather short relationship I did have), it's really rather frustrating if someone makes themself appear sincere, and they're not. If they know ahead of time they don't think it will work out, they shouldn't display interest in the first place. Perhaps the women I've met up with don't understand peoples (yes, even men) emotions are not toys.
I don't know. I guess that's what I can say about it for now.