"I think if two people who love each other..." is the common logic heard everywhere today. The problem with that is how it begins, "I think." As Christians, it is not about what we think, but about what God says in His Word. That is our guide. It is a scary world when we are ruled by "I thinks." Part of the slide has been when "I think" has overruled what God says in Scripture about relationships with words ignored like fornication (when was the last time you heard that word?), sex outside of marriage. Just because a majority has done it, right relationship with God calls for repentance, and forgiveness. The whole abortion industry has fed and profited by this out of control lack of morality. So the current slide has entered the tepid water of immorality where sin is accepted because of the reasoning, "It is none of my business what is done behind closed doors," or "Who am I to say to another who they can love." "Who am I?" Again, it is not who we are, but who God is. We have either turned Him into the great Winker at sin or blaspheme Him accordingly. "Who do you say that I am?" was asked by Jesus after spending His few years with His disciples. It is the ultimate question we have to get right. Spoiler Alert, I've read the end of the book: He is the great "I am." (Rev. 1:8)
Jesus' words, not mine.
To hate the sin is not to hate the sinner: "For God so loved the world that He gave His only begotten Son that whosoever believeth in Him, should not perish, but have everlasting life."
I don't see hate in that; rather, we are to be "rescuing the perishing."