Here's an interesting perspective from Professor John Money:

Single term ... Sexology

p. 4:

If there were a single term with which to denote the sexology of homosexuality, heterosexuality, and bisexuality, that would be the term for the title of this book, for the understanding and explanation of any one of the three applies to the other two as well. Homosexology fails to qualify as signifying the sexology of mankind, for according to its other etymology it signifies also the sexology of same-sexed partners, that is of homosexuals. The term sexology itself fails to qualify, as its meaning is already established as encompassing more than the science of sexual orientation as homo-, hetero-, or bisexual.

p. 5:

One way around this terminological impasse would be to have a word like fuckology, used in everyday, vernacular English to signify the science of what it is that people actually do under the cover of polite expreissions like making love or having sex. ...

By John Money, pp. 4-6, in Gay, Straight and In-Between: The Sexology of Erotic Orientation. New York, NY: Oxford University Press. 1988.

John Money Concepts Of Determinism

John Money Lovemaps

John Money Lust Love Paraphilia

John Money Paraphilia Hypophilia Hyperphilia

John Money Single Term Sexology