Betrayals, another "form" of abuse

Being lead to believe you have a friend, only to discover, it was never, in the first place, betrayals of friendship can be so devastating and painful, one tends to crawl back into their own cocoon(so to speak), the feeling of being ignored, ostracized, for reasons NOT explained, told in so few words, "get out of my life, never want to hear from you again", and NOT knowing why??? is so cold and cruel, so why bother or even make an effort to reach out to anyone, for the fear of yet, another rejection, another betrayal by another, yet, "so called" "friend".With this happening over and over again, bringing on terrible bouts of depression, to the point at times, one feels they just do not care anymore, about anything or anyone, slipping into chronic depression to the point, going days without sleep, baths, personal hygiene, wandering aimlessly, but yet still wanting so desperately to be accepted, for who they are and what they have become, wondering what did they do or say, to bring about such coldness and cruelty?? How could one possibly ever trust again? No one will ever understand, until/unless they have "walked in those shoes".