Enforced monogamy is as much to say enforced happiness, which we know is not possible. Unenforced monogamy might seem possible. Romantic monogamy might seem to be desirable. But the first normally collapses back into a version of enforced monogamy, while the second is liable to become obsessive and hysterical. And thereby lies close to monomania. We should always distinguish between mutual passion and shared monomania.