Sexual activity is something that should happen in total harmony. It is the ultimate union of souls. Such an act can only happen when partners conserve their energies, without exploiting it.
It is from sexual discipline, good love making emerges. If energies are exploited for sometime, the partners lose interest in each other and gradually the ability to love degrades. We are bound to seek for wisdom and creativity in order to live a life, where love persists.
This is true from from even a biological context, as it is from a psychological context. The biological decrease in drive is related to the attainment of satisfaction in a partner. When the male rat copulates with the female rat for several times, a decrease in the rate of sexual activity is observed between the two. When another female is brought in the male rats sexual drive restarts. This is nature’s own way to find a new partner once the copulation is completed.
As we are primarily apes, we are programmed to exhibit the same behaviour. It is our conscious mind and the ability to perceive a higher life(sublimated life) that gives a different formation to our life through regulated availing of instincts.
This is how we reach to the higher order of life, a life that can be termed as spiritual. A family life becomes path to spirituality. Sexual life takes a new form, from the state of achieving carnal pleasures, it will be a way to enhance love. It is at this point of recognition that leads to tantric sex.