why best friends get jealous of each other??

@sera21 (31)
March 23, 2007 2:36pm CST
my best friend got angry when i introduced him to my another good friend.he doesn't want to look in the eyes of this other person.I am really sad .:(why does it happen?why my friend got jelous of this other friend?can't three people be a nice group/company instead of a crowd? help me.....