A toxic relationship is characterized by insecurity, self-centeredness, dominance, and control. We risk our very being by staying in such a relationship with any human. To say a toxic relationship is dysfunctional is, at best, an understatement. Keep in mind that it takes two individuals to have a toxic relationship. So, basically not paying attention to certain examples of toxic relationships are harmful, as these relationships can drains and suffocates a relationship. It makes one person feel very drained and used in most cases.