I'll give you a word.

Married

Seems to fit the bill. Unless ginger people married to Asian people need a differentiation too? Why pick out single sex for a different word? If you pick out those who don't or can't have children, you would be nearer to religious definitions and if you picked out inter racial marriage, there are many who would applaud it, sadly.

Sorry, but wanting to indicate that the two partners in a marriage are of the same gender has to be for a reason. The only one that springs to mind is bigotry.