I think there's a major insight here. I have also experienced attraction in response to guys appearing to be interested in me. Suddenly, you stop maybe judging based on first impressions and start letting down your defense behaviors, just because of the thrill of being perceived, regarded, and treated as a woman by a friendly man who somehow looks better with each kind word ;-) It just pushes serious buttons inside. Of course, there's a whole new set of anxieties that can set in then, primarily whether he knows your secret or not, and how he might react if he doesn't know and wouldn't like it...