At the most extreme level, a manipulator who wants complete control will force you to cut ties with your friends and family, especially the ones who express concern about or dislike that manipulative person. By disrupting your support system, you are basically on your own, making it more difficult to leave the relationship. On the other hand, that individual might use their manipulation to gain the trust and support of your friends and family for their own selfish purposes. For instance, if they sense that the relationship is about to come to an end, they might attempt to convince your friends and family to tell you to stay with them.
