Don't try to confuse me with more words, please. It's just a waste of time.
Homosexuality and heterosexuality have been around since multiple sexes have. The second a species evolved into a species that had sexes rather than asexual production was the age of homosexual and heterosexual interaction. This all occurred long before there was man and long before there was language.
Homosexuality and heterosexuality are far more simple than you give them credit for. Homosexuality is the interaction of two sexes of the same sex sexually and heterosexuality is the interaction of two sexes of the opposite sex sexually. This implying that the state of homosexuality and heterosexuality does not only apply to human beings who have a more complicated concept of what sexuality is. A male monkey who is attracted to other male monkeys is considered homosexual, despite his lack of "emotional" and "cognitive" connection to his sexuality. Thus, that shilly-shallying about the "philosophical ways" of sexuality is quite irrelevant. In the most raw, broad, and condensed uses of the term, it's a purely biological term that means nothing more than what the word itself tells us.
History of the world and biology does not end with the human race.
Homosexuality was around long before the 18th century. Yes, that EXACT word had not yet been characterized, but the concept was known. In Rome, bisexuality and homosexuality were accepted, later embraced, and further encouraged near Rome's fall. Yes, they don't talk about this in school much (it isn't PC) but homosexuality became quite the norm just before Rome had fallen. It was normal to be gay, bisexual, straight, whatever. Sure, they didn't have words for it, but there were stories about it, Gods that represented it, and drawings on pottery and ->-bleeped-<- that showed homosexual relations even as far back as that. In ancient India there is evidence of gender diversity in Gods that could change their sexes and other examples showing diversity in sexuality and gender.
Your argument only includes the history of the European and the history of the word. Words are not as important as raw contents existing. Again, rocks were around before words were, and so were homosexuals and heterosexuals.
