Sex Red And

The Red Queen : Sex and the Evolution of Human Nature

Matt Ridley

Verhängnisvolle Begegnung

Eve Renk

Marriage and Sex

John Ryans

A Man's Guide to Oral Sex: Your guide to incredible, exhilarating, sensational sex

Sexual Positions : Your guide to incredible, exhilarating, sensational sex

Foreplay : Your guide to incredible, exhilarating, sensational sex

Aphrodisiacs, Sex Toys, and Games : Your guide to incredible, exhilarating, sensational sex

What Women Want : Your guide to incredible, exhilarating, sensational sex

What Men Want : Your guide to incredible, exhilarating, sensational sex

Sexual Massage : Your guide to incredible, exhilarating, sensational sex

Hot and Unbothered : How to Think About, Talk About, and Have the Sex You Really Want

Yana Tallon-Hicks

Enhancing Orgasm : Your guide to incredible, exhilarating, sensational sex