Oddly enough, I've had the same, surprising experiences when I've gone out. I find that women often come up to me and engage me in conversation. And in a number of instances, they've been overtly "interested". I'm not in the market, but I find it incredibly surprising and quite flattering too!
All those years when I was single and going out dressed as a male. Who knew! If I could have my 20's back again, I'd take a whole different approach!