"For he that soweth to his flesh shall of the flesh reap corruption; but he that soweth to the Spirit shall of the Spirit reap life everlasting." (Gal 6:8)
If you live to satisfy your own sinful nature, then in the end, that is what you will reap: decay and death. If you live to please God, you will gain eternal life with him in heaven. Kind of simple, isn't it? Our Lord provides us with yet another verse that reminds us that somethings are wrong. We have all been created in his image. We all have the capacity to love. We all have a desire to be happy. That does not come before the law. That does not come before the law of God.
People change. Our society changes. Our laws change. What was once unthought of or illegal is rapidly becoming acceptable and encouraged. That doesn't make it right in the eyes of God. His law has never changed. It is the only law that has remained constant throughout the centuries. A Christian knows where he stands with regard to society's rules.
I had someone tell me ones that they don't have to follow all of God's laws because they are outdated. Okay. If you look closely at many laws on the books in some states, you will find that they, too, are outdated. That doesn't make negate their validity. Until such time as the state rescinds that law, all who break it risk arrest or fines. Some denominations have modified the word of God in order to have some control over it's members. Some have added to and taken away from the word of God (and we all know what the Lord has to say about that) and brainwash their parishioners into believing they can spend an eternity in hell for failing to abide by their doctrine.
God's law, his word, never changes. Everything you need to know to live a life sown in the Spirit is written in your Bible. Take the time to read and study it. Take the time to know where the line is drawn between loving others and approving of their sin. We aren't here to judge their sins - we have enough of our own to worry about. We also don't know what their relationship is with the Father. We only need make sure we, individually, sow in the Spirit of God.