I can’t move on

One thing I learned lately is that never trust fully to anybody, they can betrayed and say a lot of bad thngs about you! I was very hurt And dissapointed and feeling betrayed to my collegues whom I considered close friends! I can’t move on until now, I know its not good to hide anguish and anger but I just cant believed what they are doing towards me. I feel embarassed in front of other people. Maybe I can forget but our closeness and friendship wont be back the same as before.