From the Nashville Scene's interview with Augusten Burroughs:
Tennessee is unfortunately one of the many states where gay people are not allowed to marry the person we love, but you're lucky enough to live in Massachusetts. Are you and Dennis married, and if not, any plans?
We're not married, actually. We're a legal corporation, though. That's close. But we're not married and there really is no good reason for this; we've been together nine years and we both wear rings as if we were married. And I am sure that at some point we will actually formalize our union. But I am very proud that once again, Massachusetts has made a bold and controversial move to assure the freedom of every American citizen, regardless of sexual orientation.