[nodelessness]

I agree that you don't have to get imaginary beings involved.

However, I disagree that a vague verbal or non-verbal understanding is sufficient to make one's commitment to the other concrete. It is not enough to inspire confidence in anyone. If your commitment is really that concrete and real what is keeping you from registering it with the government? It shouldn't really bother you - a mere formality. From making it widely known to everyone around you that yes, you are committed to me. Surely if I mean that much to you, and you are as committed as you say you are, this shouldn't be a problem.