The government should not be allowed to marry..... anyone.
This is a church and state issue. Churches have been marrying people long before the government and they should decide what the definition of marriage is and how they want to apply it.
The government should only be allowed to create personal partnerships. Then they can do what they want and the churches can do what they want.
...and you can be married without the partnership or not married with it.
The government telling me that my religion is "wrong" is discriminatory to the group of people for which I belong.
They need to just get out of the marrying business.