I was watching a show, and there was this conversation or story.. here it is:

There's a Greek myth that says:
When humans first came into this world,
men and women were of one entity
But the king of Gods was worried that humans would become too strong
and overtake the gods one day
so he decided to cut humans up into Men and Women
From then on, men and women started looking for their other halves...
so as to make each other complete