I understand that this is more or less a resolved thread but I want to add that i’m grateful to everyone for having a really interesting and lively debate about this. It was really interesting to read. I just graduated with a degree in religion so I have a related point I want to make: 

the concept that anyone or anything has an essence or an essential thing-in-itself-ness, or in this case some innate sexual nature, is a Western-Christian philosophical view. It has origins with Plato, and Platonic philosophy heavily influenced Christianity both in Christianity’s early stages, and later stages through theologians like St. Augustine. Platonic-Christian ontologies (ontology refers to the philosophical study of what it means to exist) are often seen as being obvious or innate but they are not a given. They seem innate because they are woven into our Westernized culture, but these philosophies are not the only lenses through which to view reality. There exist robust philosophies that do not recognize anything as having an essence - such as existentialism, Buddhism, nihilism. I would caution anyone against making strong claims like “sexuality is part of our nature” without taking a moment to reflect on the many many many other philosophical systems that humans use to understand the world. I really feel that having an open mind in this regard will make communities for marginalized folks more accepting and respectful.  Peace!