Sentimental blackmail is a powerful form of manipulation , which threatens our loved ones new , direct or indirect , that will be upset and will punish us if we do what they want them. Blackmailers of this kind are usually persons from us ( our friends close partners , family members with whom I initially had a good relationship ) that make us feel obliged to fulfill desires guilty if you refuse or to fear they will leave if you do not listen . Such is the case of this boy , who was blackmailed by his sister, but eventually , the boy admitted his guilt in front of grandparents and was better.