greek life secret rules

Remember in high school you could just go to a table and talk to someone? But, here, if you did that, they might think you were crazy? I figured out why guys like the fraternity guys keep to themselves all week. They are starving girls of conversation. So, that they will be so excited on the weekend to finally get to talk to a guy. Right? is that a secret trick fraternities have. Cuz you see people silent all week, then they are buzzing at a party. Really strange.