I have several answers for you, most of which appease my own ego.

Psychopaths are very charming. I'm not exaggerating or gloating, either. It's actually one of the criteria. Many psychopaths are so charming and cunningly deceitful that experienced criminal psychologists succumb to their charms to the point of giving them money, housing them, and even making attempts to get them out of prison. Again, I'm not gloating. There are case studies of this phenomenon.

A few other things... We live life on the wild side. Literally. Most women find this exciting, at least at first glance. We're also quite mysterious. However, this is usually because most of our stories are lies and consequently quite vague. Our self-created history is usually based off cliche roles (i.e., the abused child who grew up to donate millions to charity, the man who nearly escaped cancer and is now living like there's no tomorrow, the rags to riches businessman, and so forth). One would think people could see through these cliches and lies easily. But psychopaths are experts at playing on people's emotional needs and desires. We can and will play any role that we think will please our love interest, business partner, friend, or other such person. This illusion of emotional attachment (as well as a cokctail (sic) of other charms and thrills) can be so strong that it blinds the psychopath's partner of the inconsistencies in the psychopath's many stories and manipulative tendencies. Any person who watches this relationship from the sidelines can (and usually does) notice how manipulative the psychopath is.

I might add more to this later... It's getting late...