Love: To give. To donate. To put beloved's happiness above your own happiness. To link your happiness to your beloved's happiness. If your beloved is happy, you are happy. You live for your beloved not for you. Such love must be directed into the divine area where beloved is all pervading God who knows what mind thinks.
There is no point in developing such love for worldly person because he will not be able to appreciate such love owing to the fact that he will never know what you think.
Business: Give and take. To put beloved's happiness at par with your happiness. To some extent, delink your happiness from beloved's happiness. If you are making him happy, you expect your happiness in return. You live for your beloved and for yourself. It is usually 50:50 relationship which is widely prevalent in this world.
Selfishness: To take. To put your happiness above beloved's happiness. To completely delink your happiness from beloved’s happiness. If you are happy, that is the end of the story. You are not worried whether your beloved is happy or not. You live for yourself and not for your beloved.
This type of people are demons. They will harass everyone with their power. They do suffer later in hell for lacs of years.
Love is Give and Give
Business is Give and Take
Lust is Take and Take
(By Shri Kripaluji Maharajaji)