Acharya Prashant explains that when the mind is not pure, it relates to others for a purpose or a reason. This is described as "Sakam Prem" (love with a purpose), "Sakam Bhakti" (devotion with a purpose), or "Sakam Seva" (service with a purpose). The term "Sakam" means something is done due to a purpose, a desire, or a reason. The problem with this is that what you want from the other person is never-ending and too big to be supplied by them, which leads to frustration and unmet expectations. This kind of relationship is like an investment from which you expect a certain return. When you don't get that return, you stop paying the installment, and the love or devotion you were displaying comes to a stop. This behavior stems from a feeling of inner hollowness, which we try to fill by demanding things from others. Man is caught in a strange situation where he wants something but is also afraid of his deepest desires. As long as you are hopeful of getting the reward you've been dreaming of, you will keep putting effort into the relationship. However, once you sense that the other person is not going to give you what you have been targeting, the relationship ends. In contrast, true love, devotion, surrender, commitment, and service must be "Nishkam," which means without purpose. "Nishkam" can be interpreted as either purposelessness or as having the highest purpose. If you are related to someone for a reason, your relationship always has a clock ticking on it. This is a great dependency and slavery, where you allow yourself to be joyful only when certain conditions are met. Your joy is not a social thing; it must not depend on others' acceptance or rejection.