One who has unreliable friends soon comes to ruin, but there is a friend who sticks closer than a brother. Proverbs 18:24 (NIV)
The mistake many people make is to think their good friends have suddenly become bad.
Most often that is not the case. The reality is that they have gotten what they want from you and so they remove the mask to reveal their true self.
Life is like that. Keep your Head up and shoulder high. The journey of life is not for the feeble minds.
Be Strong and courageous