The following story is an interesting take on how one of the most pleasant activities known to humans may have developed.
But it's anything but romantic.
THE FOOL WHO INVENTED KISSING by Doug Long
He clubbed her and dragged her off to the cave.
She hated him.
He washed her face, untied her, and gave her the last meat from the fire.
That was better.
Hungry himself, he licked her greasy fingers, then her face. His lips brushed hers, paused, touched again.
Tomorrow, he would kill meat for her.
from World’s Shortest Stories Of Love And Death, a collection of fifty-five word stories compiled and edited by Steve Moss and John M. Daniel