My heart is heavy with all that is taking place right now concerning the debate over gay marriage. Apart from the issue itself, I lament the hostile rhetoric of it all and the way sides are being taken with so little nuance (see Facebook's pink equal signs and their "Christian" cross variations), not so much for a position but against someone else taking the opposite one.
With this in mind, I appreciate N.T. Wright's perspective on framing the discussion and would encourage you to give thought to it in terms of how Christians should engage:
As to the issue itself, I wrote about it here on the blog five years ago and you're welcome to agree or disagree. For a more recent treatise that I think worthy of your time, Voddie Baucham's article, "Gay Is Not the New Black," is an important piece that does a good job addressing the issues at hand in the context of the current rhetoric.
All that said, pray for our country, that regardless of whatever differences people have, we can show love to one another in our discussions of them.