The government shoud be in the business of issuing a license that recognizes the civil partnership of two consenting adults. They should further offer the services of a notary to complete and file the license once both partners sign it.
If you want a religious celebrant to recognize your marriage at a joyous celebration, the state shouldn’t be involved.
Yes this sucks but the genie isn’t going back into the bottle.
Why just TWO?
That’s how it was handled by the Pilgrims in Plimoth/Plymouth. They believed marriage had nothing to do with religion and shouldn’t be connected with a church. Marriage was strictly a legal contract.