So as a guy, if you go with other guys to a party and one of your friends were to get "lucky", so to speak, that would be considered a good thing by all the guys that went with him. It's a celebrated triumph amongst men that makes all of us feel a little better to know that you can get laid on a Friday night.

I've noticed though that a group of girls at the party often treat things the exact opposite. If one of the girls were to go home with a guy it's an affront to the group. They are sour about the experience, be it jealousy or a feeling of abandonment.

I'm curious as to why this difference is there and what the rest of you think about the concept in general.