look first to Mars . . . followed by (in order) Pluto, Juno, and the Sun
The Moon shows where (and how) we want to be approached; the Sun shows how we are likely to move forward
but, male or female, MARS is the planet (both sign and house placement) that is the strongest indicator of your karmic "tendencies" in regards to both sexual expression AND sexual desire
sexual dysfunction (at least as it may be "brought forward" from the "past") will show up with afflictions to either Pluto, Juno, or (sometimes) Neptune from an angular planet (something near the 1st, 4th, 7th or 10th House cusps)
or multiple "afflictions" to planets near the Descendant (either 6th or 7th House) or in the 12th House
from either Pluto or Juno in addition to ANOTHER personal planet (Sun, Moon, Mercury, Venus, or Mars)
Sexuality is one of the truest "expressions" of your past life energy; there is a style (and expectation) that you bring with you
and Mars whispers in your ear how you like it -- and Pluto shows what you're willing to do to "get it" as well as where you may hide when trying (successfully OR unsuccessfully) to "express it"
Karmic Astrology is a blueprint to the soul's evolution
and sexuality (believe it or not) is one of the truest barometers of that evolution