I don't see what my opinion of homosexuality has to do with this thread.
I thought the point was that there was an objective standard and our opinions on the subject didn't matter.
...that coexist with the fundamental, underlying morality that I believe humans share.
I was just trying to get at the details of this "underlying morality". I thought my example fell into the "do unto others as you would have them do unto you" category. Apparently that standard doesn't apply to all action and hence does not qualify as an underlying morality.