Here is an insight that if it was properly taught to us, if there were classes in it at secondary school, could save us years, could help the economy, could make a major improvement to humankind.
Instead, we keep the knowledge secret so that in every generation, millions of people have to work their way through the painful mystery by themselves.
It's as reckless as if we hid the secret of agriculture and made each new generation work out how to raise wheat by themselves.
Surely the point of civilization is to share knowledge and ensure that our successors can benefit from the pain and the hard-won insight of those who came before.
It works when it comes to the secrets of pottery or physics.
Why would we not do the same with love?
So the insight is this.
If you're a little unlucky, you are liable to come across someone in your love life who will be sweet and charming and tell you with great sincerity that they want a relationship.
They will be extremely affectionate and focused on you at first.
They'll find nicknames and be tender towards small insecurities that others have missed.
