Most Helpful Guy
Hell yes, that can be true.
Nothing can kill romantic interest, faster than having a woman with a serious unfriendly look on her face and cold eyes.
Women for the most part have no clue the stress a guy feels trying to make that first contact, being met with a serious face and eyes that seem to look threw you can and does intimidate.
Lets be honest, you can always tell when a guy is rejected by a girl at a social event even when it is done kindly. Than you have the rejections, where the girl does it to embarrass and humiliate the guy.
So if a guy sees a girl that has a too serious look on her face and unemotional eyes, it is understandable if he gets intimidated and does not come over and introduce himself.