Good grief, Jesus’ first miracle was at the Wedding of Cana where a man and a woman were married!
Jesus did not address directly each and every violation of the Law. However, he did address the Law itself.
Luke 16: 15 - 17
15 And he said unto them, Ye are they which justify yourselves before men; but God knoweth your hearts: for that which is highly esteemed among men is abomination in the sight of God.
16 The law and the prophets were until John: since that time the kingdom of God is preached, and every man presseth into it.
17 And it is easier for heaven and earth to pass, than one tittle of the law to fail.
I think the problem isn't "gays". The problem is that most churches have already abandoned most of the constitutive elements of Biblical marriage.
According to Scripture, marriage is defined as man-woman (Genesis 2, referenced also by Jesus); lifelong (prophet Malachi says God "hates" divorce, Jesus says that a person who marries a divorced person is committing adultery); and procreative ("be fruitful and multiply"-- but implied by the very fact that they are malke and female: this is part of the natural "design".)
There is not a single instance of sexual partnering that is man-woman, lifelong, and procreative, that is condemned in he Bible. There is not a single instance of sexual partnering that is same-sex, non-lifelong, or anti-procreative, that is blessed in the Bible.
If I am in error here, please correct me.
But most "Christian" churches have already given up on 2 of 3, namely, lifelong and procreative. They OK divorce/remarriage and they OK anti-procreative acts, e.g. contracepted sex.
So most "Christian" churches have already re-defined marriage into a form contrary to what God has designed and defined.
Gays are just making it 3-out-of-3.
Perhaps if it was addressed and considered an issue in biblical days, and we still have strong traditional marriage views, it’s not really a concern. I would think that if was going to ruin marriages as we know it, then after 200 yrs, it would have happened.