Reluctantly leaving behind the cultural environment based on image models, present sexual life is strongly influenced by symbolic models. In a symbolic model environment, there is no sexual difference. This could be expressed by saying that, in a symbolic society, there are no discriminations based on sex. All humans, independent of being male or female are equal, because this results from the analysis on symbolic model. As already said, sexuality is associated with image models, and changing the structure of basic models, from image to symbolic, has produced strong perturbations in the approach to sex. In the present technological implementation of humans, the dominant position of the man is evident. This is the source of the present crisis of sexuality. A woman, knowing that she is equal or, many times, even superior to the male partner, will have difficulties in implementing her sexual life. Due to this problem, the number of non-usual sexual behaviour is high. In this approach of evaluation of the problem, we will talk only about the "normal" situation, i.e. the situation which should be dominant in sexual issues in a society dominated by symbolic models. Both men and women have to build a structure of symbolic models, in which the models explicitly related to sex (image models) should be controlled based on logic. The basic statements of this symbolic model should be the following: 1. There is a perfect equality between men and women, including the explicit sexual interaction. 2. Faithfulness to a single partner is not an important feature in a structure dominated by symbolic models. On image models, faithfulness to a single partner, only for humans, is necessary and results implicitly from the way of choosing the partner ("pure love"... i.e. the partener is included in the PSM as an image model). 3. Sexual attraction can be strongly discouraged by the existence of a prediction that describes exactly what is going to happen during an explicit sexual interaction. From here results that a 'symbolic couple' needs to invent, if possible, everyday new ways of sexual interaction. Also, when routine appears (the prediction is confirmed too precisely), the couple breaks-up to avoid unsolvable stresses. These things can be already met in the world we live in, especially in the most 'symbolic' countries (the most advanced from the economic, technical and scientific point of view). The theory predicts the continuing changes of our sexual 'ways' based on the general shift from image to symbolic models. However, due to fundamentalist reactions (rejection of symbolic models of a large fraction of the population), the sexual life of those attained by fundamentalism is affected. For 'symbolic' people, sexual activity can contribute to everyday happiness only if the partners are on the same level of 'symbolic' development.