That seems to be a type of negatively expressed sweetheart, in these terms.
There is a magical center of action, greatly to be desired, where one neither runs over others nor lies down to be overrun.
There is a magical center of action, greatly to be desired, where one neither runs over others nor lies down to be overrun.
However, let me make one important addition. The author says that the person who is not a jerk is a sweetheart. However, following Aristotle's theory of the golden mean, let me point out there is also a third type, namely someone who discounts their own perspective and always thinks the other person is right, and so goes around feeling guilty and inferior.