Don’t be selfish taking everything and everyone by your side.Selfishness won’t guide you to anything but madness,loneliness.Even your friend want to have fun with others,you should join her.Not letting her and you’ll stay alone in your room.This is not a friendship.Love each other and make different things together but with other people,not only both of you.You’ll be used with sharing same stuffs,same thoughts,same feelings with your friend,but when other persons want to join both of you,the jealous may increase,same with madness,loneliness.You should open your eyes even more,go and have fun with everyone,not only with your best friend.Of course,having fun doesn’t mean to trust the others,you and your best friend should trust each other more than anything.