“If any element is known for deep sexual intensity, it’s the Water Signs. Everyone knows Scorpio is a sexual stinger, but the same is true of Pisces (who can get lost in their lovers) and Cancer (who seeks out partners that will crack their shells). What these watery ones have in common is a desire for emotional connection via sexual pleasure. Water Signs want to plumb the depths in the bedroom – and beyond.
As such, if you’re aiming to seduce a Water Sign (or looking for a new way to satisfy yourself as a Pisces, Cancer or Scorpio), then “Coital Alignment Technique” is for you. The main focus here is maximum stimulation for both partners – inside and out where experts claim simultaneous orgasm is more likely with this position than any other. Just remember, intense experience is the key for Water Signs.
To give CAT a try, start with missionary position, but allow the top partner to put all their weight into their pelvis. The bottom partner should wrap their legs around the top, ankles resting on their calves. Bored with the basics? Try “Starfish,” where both partners lie back with heads in opposite directions, legs in scissor position, for a similar effect."
by S.K. Smith
I really like this book: Sextrology: The Astrology of Sex and the Sexes by Stella Starsky.
Each sign/gender has a one-page introduction followed by the subheading “Sign + Mind.” This first section describes the psychological makeup of its natives, using the cosmology of astrology (polarity, rulership, element, quality, etc.).