 Your cohabiting could be your cousin, your best friend, your aunt, your sister, your lover that you are non-monogamous with. As long as there's commitment, shared resources, and an intention of permanence, you can have that person's health insurance. You can have the equivalent of what French call Social Security. You can have the tax benefits, which are enormous. You can have all of those benefits. And it's for gay, straight, anyone...