Being insecure and jealous will be the same. But some (most?) women tend to linger in that state of jealousy, turning it into a vendetta towards 'hotties' instead of a competition to become even 'hotter'.
-sigh-
Women!
Women tend to deal different with their insecurities. We're men are jealous sometimes as well, but we rather tend to rationalize it by seeking explanations, while women become bitches
