I believe that your friends are a reflection of you. Why? Because you choose your friends and they should reflect your values. People who bring drugs, violence, etc. into their relationships with others are bound to hurt you at some point. Choose wisely, life is tough, we all need friends who lift us up, give support and add joy into our lives...people who abuse drugs and hurt others can not see outside themselves...I recommend to move on until they deal with their issues and can be a "friend" that a friend ought to be.