The problems come from being too addicted to the high, and not enough in the body and able to bring presence to the simplicity of physical experience, or caring sensitivity to the other person. Also easily addicted to the high. Virgo, being earth, is basically sexual, but initially struggles with puritanical judgment of sexuality. Air is the element most repulsed by the human body, and the least able to feel and express emotions. Air is the most unconventional and open to experimentation.
Air is excited by the thrill of trying something new.
Gemini and Aquarius are considered the most bi-sexual signs. Water thrives on intimacy and emotion, so water tends to have the fullest sexual experiences, but also, once feeling safe with a sexual partner, is the most likely to go too far, too fast without enough discernment. Therefore water easily becomes addictive and co-dependent.