I think it struck him as a unique idea. He thought about it and noted that the state wouldn't recognize Church weddings. I responded that such recognition was rarely beneficial anyway, as the state puts a penalty on marriage.
He then cocked his head in thought again and stated that if the State did invent a new non-Christian definition, that he thought that the Church should indeed start to marry people without a state license.
It was pointed out to me, that if they did marry people without the state license, unitarian churches and Episcopal churches would marry gays. But they have been for years. Those are just not recognized by states.