can i hv a trusted fren??

actually wat is best frens?? do we need a best fren beside us everytime?? i hv a best fren since primary,i told her all my happiness n wat is happening within me n my family...i wont trust any of my fren,BUT her...at last,she told all my story to my another fren...i'm so embarassing wen my fren asking me abt my family...FROM TAT DAY onwards, i told myself NT EVER TRUST anyone except my owmself...we're human, sometimes we might done somethin wrong...i know it so i wont trust any of my fren anymore...i'm so sad of her