God’s instructions for marriage is a man and a woman..,

“And Elohim created the man in His image, in the image of Elohim He created him – male and female He created them. And Elohim blessed them, and Elohim said to them, “Be fruitful and increase, and fill the earth and subdue it, and rule over the fish of the sea, and over the birds of the heavens, and over all creeping creatures on the earth.”” ‭‭Berĕshith (Genesis)‬ ‭1:27-28‬ ‭TS2009‬‬ http://bible.com/316/gen.1.27-28.ts2009

“And the man said, “This is now bone of my bones and flesh of my flesh. This one is called ‘woman,’ because she was taken out of man.” For this cause a man shall leave his father and mother, and cleave to his wife, and they shall become one flesh. And they were both naked, the man and his wife, yet they were not ashamed.” ‭‭Berĕshith (Genesis)‬ ‭2:23-25‬ ‭TS2009‬‬ http://bible.com/316/gen.2.23-25.ts2009

The first five books of the Bible is God’s instructions. It condemns same-sex marriage. Loving God is keeping his instructions. His instructions for marriage is a man and a woman.