Yeah, more or less. Plus, as long as Noel Vermillion is alive, if either of us die we'll come right on back. Neither of us should technically exist you see, so I tricked her into mutually acknowledging each other's existence. As long as one recognizes the other, we can't die.
There are also a couple of people who's hate binds me particularly firmly. Namely, Rags, Kokonoe, and Phantom.
I simply can't die as long as even one of these fail-safes are in place.