Homosexuality occurs naturally everywhere, not just in humans but also in other species of animals. It's not "unnatural". And as we are made of nature, everything that we do is "natural". Our thoughts and actions - all of them - are a natural consequence of biology. Nothing that we do is "out of nature" as we are in fact nature.
Screw everyone who says it's otherwise. I don't care what part of scripture you're quoting.
Let's fight ignorance, together. For a more progressive world.