Quotes:
“The drive to love your partner is universal”
That feature — a key characteristic of our species — is the pair-bond between sexual partners, a special kind of attachment to one’s mate that we humans surely inherited from our primate ancestors, that is seen in cultures with all marriage types, and that people experience as love. The drive to love your partner is universal.
Nicholas Christakis from the book Blueprint: The Evolutionary Origins of a Good Society