That is interesting because Love is actually an object of philosophical investigation.
The ancient Greek had the notions of affection or fraternal love - Storge (στοργη), friendship - Philia (φιλια), romantic love - Eros (έρως) and admiration or unconditional love - Ágape (αγαπη).
C.S. Lewis has a book investigating the history of those concepts, titled "The Four loves" under the Christian perspective.
It has happened through time that people mistake Storge for Phila and Philia ends up mistaken by Eros.
Apparently people don't know how to cultivate friendship anymore.
Philautia happens to be love to oneself and ends up corrupted to egotistical ends.
The excerpt you have shared points to some of those above.
