In the words of Mengzi, "The heart of compassion is the seed of benevolence", once such as which feels for another person that affection will become love.
Because humans put themselves first and can't love another person as much as they love themselves, by sympathizing with other people, we obtain a feeling of satisfaction from one another.
Well then I guess love is merely self satisfaction.
-Tereshima (Sakura Gari)
