In Tantra there are two important poles of energy known as Shiva and Shakti. Many of us associate practices of Tantra with sexual awareness and expertise. This is not the case. It is a misunderstanding created by teachers, who misuse their powers. In Tantra, Shakti is the creator and Shiva is the instrument.
Adi Shankaracharya wrote that without Shakti, how can Shiva create. Before marriage a girl sits on the right side and when the marriage ceremony is over, she sits on his left side. She is then known as Vama which means on the left side. Vama Marga is a misunderstood concept. In Tantra, Vama marga means the path of spiritual evolution, when practiced with the wife/partner. You are not expected to practice with different partners. Monogamy is expected.
In Vama marg, it is Shakti, who is important not only in sexual life but in spiritual practices also carrying out the process of creation and conducting the rituals. Vama marg can be practiced by sincere couples. In Vama marg, the partner prostrates himself before his wife, and she puts the spiritual mark on his forehead. In Tantra we gradually transcend our urges. Woman comes first and she is the initiator, and she can awaken the kundalini and as a wife/partner she is the spiritual companion.
There is another path called the Dakshina marga or Vedic tantra in which the aspirant uses the prana from Ida and Pingala. Union takes place between the mental and pranic forces unite and this is equivalent of the union between a man and a woman.
Aim Hrim Klim