At the First Things blog, Michael Hannon writes a weighty treatise pointing out how artificial and recent our notion of duality in human sexuality is. He points out how false the notion is. We are defined by our worth to God, not by our failings nor by what tempts us to fail. He makes the case that traditional reasoning in Christianity is firm ground for understanding sexuality and marriage, and politics are not only false in this regard, but running out of steam, even being shunned by leftist, et al. 

Jesus said he came to bind up the broken and loose the captives. Whom the Son has set free is free indeed. 

Mr. Hannon lets his education and broad vocabulary shine through. He thinks and writes relatively deeply. So, steel yourself and be determined. I am confident you will see the worth and understand the subject and also yourself better for reading through it.