Stop pretending that you don't know the answer, since I spelled it out for you last week.
But for those just tuning in to this discussion, in the aforementioned case, the U.S. Supreme Court stated that many "rights" have limitations, and that these limitations can be supported by historical tradition.
That ruling could be applied to the issue of same sex marriage, in that the "right" of marriage could be limited by the historical and traditional definition of marriage as a bond between one man and one woman. Which is is legal definition in many states, and at the federal level.