An interesting article appeared on The Buddhist Channel today.  The link is below.  There are related articles on the websites referred to at the end of this article too.  The "third nature" - I like that.

Buddhism and Homosexuality - Singapore -- Homosexuality is the tendency to be sexually attracted to persons of the same rather than the opposite gender. According to the ancient Indian understanding, homosexuals were thought of simply as being 'the third nature' (tritiya prakti), ...  [The Buddhist Channel]