The biblical position on marriage is not confused or confusing... one man and one woman. However, in light of our president's most recent declarations about marriage, I thought you might be interested in a good "non-religious" argument for traditional marriage. If so, check out the link below. (Warning, it is not easy reading but worth working your way through). Departures from biblical truth are not just opportunities to bemoan the demise of our culture; rather, they are opportunities to lovingly engage it with the truth.
Live like God is real, Terry