It is quite often possible to hear a phrase that the love lives three years. Someone explains such cooling of feelings from the physiological point of view, and someone is convinced that simply nothing is eternal.
The first several months, year after acquaintance for many couples - the brightest period in the relations: intensity of emotions, emotions, euphoria. It seems what so will be always. But there pass two years, three... Bright emotions are replaced by more equal relation, and then a routine at all. And here soul demands flight again, and a body - hormonal splash. It seems to people that the love passed and it is time to look for new.
Love as drug
According to one theory, people are genetically programmed to feel affection to each other for three years according to one version and seven years - on another. Supporters of this theory say that evolutionarily in the person the main requirements were created - to survive and continue the sort, and for the last several millennia they did not change. And together it was simpler to people to survive and grow up posterity, than one by one. But something else owed to hold the man and the woman together throughout some time, and the nature thought up love. The chemical processes arising under its influence in a brain created emotional dependence on the partner, forced to see first of all his advantages and not to notice shortcomings. When the child grew up and became rather independent, the feeling between his parents began to die away. Supporters of this theory see in reproduction the only purpose of rapprochement of the man and woman, and in their draft to each other - only a consequence of effect of hormones. Some scientists even compare love passion to drug addiction.
Helen Fischer, professor of anthropology from the American university Rutgers investigated many years love chemistry. The results received by it say that emotions at different stages the relations are followed by increase in different hormones. So, love is connected with estrogen and androgens, the long relations - with serotonin, a dopamine and noradrenaline, and the attachment is followed by increase in oxytocin and vasopressin. Oxytocin helps couple to abstain from impulsive acts and from break in relations during the crisis periods when effect of other hormones comes to naught. At this time partners find an opportunity to look at darling not turbid look, they at last realize that he is the same ordinary person with the merits and demerits. The emotional and physical dependence passes, and now depends only on people whether they will decide farther to stay together and work on the relations, or not.
All cases - are individual
It is possible to trust in the theory about hormones especially as everything looks quite logically. But it would be too simple. In practice it is possible to observe that a huge number of couples breaks up in a year or in several years, but meet also such which manage to retain the happy relations and interest to each other throughout very long time. Also it depends on a set of factors. The love not necessarily passes in 3-5 years if: partners continue to surprise each other and remain interesting, develop together, appreciate each other, are able to diversify the life and to get bright emotions from different joint classes, that warming up also passion. But that such relations were possible, not only the physical inclination initially has to unite the man and the woman, they have to have something the general that a row it was more joyful to them to be, than separately.