California Supreme Court Upheld Proposition 8, banning same sex marriages, but wisely allowed the 18,000 gay and lesbian couples who already joined to stay in marriage status. I don't know that they could do anything else. It was a 6 to 1 decision in keeping proposition 8.
The decision continues to allow gay couples to join and have all the legal rights as a married couple, but does not use the word marriage. The court's decision was based on the facts that the couples are not being denied any legal right that any married couple has.