FireDragon you're right. Our fascination with and hyper-focusness on sexual sin is relatively new. The reason why there are only a handful of passages in the new testament related to marriage and sex is because it was not the end-all be-all issue that it is today. Heck, marriage in the first century was mostly about property (yes, property) and had little resemblance at all to marriage today. Early Christian leaders, even Martin Luther and some earlier Roman Catholic theologians and leaders, actually opposed marriage in the church. They viewed it as the state usurping the churches authority because marriage was a state function. Fast forward a couple hundred years and now it's the total opposite; many Christians believe marriage is an expressly religious institution and the state has no authority there. (And if you agree with that then you must support the SCOTUS opinion because, frankly, freedom of religion means everyone is free to practice religion; meaning the dozens of faith traditions who celebrate gay marriage have the right to do so and not have it banned by a state pandering to evangelical Christianity).
Our enamoration with sexual sin needs to be checked somehow. It's amazing the incredible number of sins Jesus himself fought against in the first century are easily dismissed as irrelevant by almost all Christians, including the most hardened evangelicals (like gluttony and greed and failing to feed our neighbors; we pass it off as being about who deserves what, as if Jesus ever cared whether someone deserved to be poor or not; his concern was whether they were eating, not whether they worked for their meal). And yet we hyper-focus on a series of things that some understand as sin as the most important issue in all of Christianity that were essentially non-issues until the last several decades.
And, as Timothy mentioned, there are many Christians, and have been for decades; including some major Christian denominations (UCC, TEC, a number of UMC congregations, to name a few) who do not view homosexuality as incompatible with Christian teachings. In much the same way as they no longer follow Biblical mandates that a rape victim should marry her attacker; they understand Biblical guidelines for marriage and sex to be culturally impacted and demand interpretation. (And ALL Christians do this, whether they admit it or not. Some don't like to admit that they can dismiss or explain away a number of sexual, marital, and gender 'sins' laid out in the scripture as abominations or inappropriate, but hold fast to passages about homosexuality. Largely because we humans are hugely affected by culture and since those issues aren't major cultural issues, they are easy to dismiss.) And this isn't "new" either. Some have had that theology for decades. Even in a time when homosexuality was illegal and you could be jailed for it, there were major Christian denominations thinking they should have equal rights under the law and could be married.
