There's a fine line between "civil unions" and:
. . . and that's precisely because of the societal connotation. I'd love for the doctrine of separation of church and state to rule the day here, because obviously using a religious term for a social contract is a massive annoyance and pure silliness, but the fact is, we do. Why should the connotation and societal importance be legally denied (or, more precisely, hindered)?
There really has to be a better way.