I think the thing men don't get is that we don't put up that invisible barrier against nice guys because we prefer bad boys. We put up the barrier because by the time a woman reaches adulthood we have had so many dickheads lie to us, manipulate us and generally be sleazy to us that at first we can't tell the difference between a nice guy and a jerk so we protect ourslevs until we feel like we can trust you. this is just the way life is. So instead of being frustrated with women go kick those guys who made us have ot act that way in the junk!