Watch Silly Love The biologic base of romantic passion

Is romantic love real?
Poets say it is... how about scientists?
As our research tools grow in sophistication, some hard-boiled findings start falling into the pattern suggesting that romantic passion is a biological process essential for our species to evolve. Functional MRI, neurochemistry and other advanced tools of scientific investigation validate what songwriters always knew, we do need love.
But neuro-endocrinologists go one step further; they tell us how to keep it.