Hmmmm this is a good question- considering that the term "Christian" can refer to almost any person these days. The actual term means "one of Christ", and the ones who take their faith seriously, upholding 2,000 years of constant, incessant Faith and Tradition, should react with disgust to these acts in the Supreme Court.
Man will be the same till the end of time. As such, the guiding principles at the heart of man and his nature WILL ALWAYS BE THE SAME. Evolution of truth is false principle, and goes against the very definition.
Man and woman for a true family: yesterday, today, and forever.