Munger argues that we are wired to naturally favor people we like and love to the point of irrationality. In social psychology, this tendency is known as in-group bias.
In order to keep liking and loving them, we do the following behaviors that we may not have done otherwise:
Distort facts
Ignore faults
Comply with wishes
Favor people, products, and actions merely associated with the object of affection.
We even go to great lengths in order to keep being liked and loved by others; even people we don’t know.
Source:
Michael Simmons & Ian Chew