My argument is as follows: There are three sexual orientations and the lack of, or four sexual orientations, however you wish to define it.
- Heterosexual (opposite sex)
- Homosexual (same sex)
- Bisexual (both sexes)
- Asexual (neither)
In addition we have refinements to the above, and paraphilias.
So lets look at other ‘sexualities’, whilst exploring why this is sensible.