I know the intelectual side of this

in Greek thought: familial or affectionate love (storge);
friendship (philia);
romantic love (eros); and
spiritual love (agape)

But what is it exactly to be loved and to love another?
And how does one show love to another? Or receive it with grace and dignaty?

(Just so you know my temperament from a myers briggs point of view is:
intj I am having a loss of confidence at the moment on this,
yes INTJ do from time to time.)

All ideas are welcome & thank you!