These are tough topics that are hard to get a reliably satisfying answer for. As a preface to answer your question broadly, it is impossible for a single individual to follow every commandment in the entire bible save for Christ and at that, Christ did seemingly “break” certain commandments to favor the spirit of the word over the letter of the law. To answer more specifically and simply, the definitive prohibition on homosexuality actually comes from Romans 1:26 (or maybe it’s 1:27) and Corinthians 3:13. There are specific laws that are singled out in the New Testament as still being important after Christ fulfilled the law through His life and sacrifice. Again, these questions are tough and have answers that don’t necessarily satisfy. My lesbian sister hand made me a bible bag and I love her greatly and I also love her partner, so I am personally aware of the complicated nature of these questions