Falling in love is what our species does, unlike the great apes: chimps, bonobos, gorillas and orangutans, but like the "lesser" apes: gibbons and siamangs, and like other primates like titi monkeys.
“Romantic love is not an invention of Western culture. Instead, the idea that romantic love is an invention of Western culture is itself an invention of Western culture, and a rather implausible one at that.”
[Link below.]