Attractions are the second step which is an amazing neurological condition . In this step , a person starts to feel more than lust and sexual desire . According to the scientists , three main neurotransmitters related to it are adrenaline , dopamine and serotonin .
On the journey of love , the stress level of a person can increase a lot due to which the amount of adrenaline and cortisol increases in the blood . In this condition a person experiences strange reasons for anxiety and his mind begins to develop unconditional love towards someone special . Often in these cases , the problems faced are an increase in heart beats and drying out of the mouth .
Helen tells about the dopamine , people who love someone have difficulties with sleeping at night , loss of appetite , lack of interest in doing any work and a feeling of happiness when repetitively thinking about small things connected to the person they love .
According to research conducted by Helen , where she studied the brains of a few couples . She found the amount of dopamine level in their blood to be substantial . This chemical aggravates for the fulfilment of desires and its effect on the brain is similar to the effect of cocaine .
Serotonin too is an important chemical for producing love , due to this chemical a loved one becomes an integral part of a person ' s thought process . It also connects two people together by their likes and dislikes .
Affection is the third and the last step of love and provides the strength for a relationship to continue it for a long-term . A journey of life with every moment they would like to spend with each-each other and won ' t give away their trust till the end of it . Scientists believe two hormones are responsible for this behaviour : oxytocin and vasopressin .
Oxytocin plays a vital role in the cases of Love and relationships and deepens the feels of love and care towards partners and by this hormone , two people start to feel the closest to each other . This hormone is also responsible for the development of the relation between a mother and a child .
Dyan Witt , an Assistant professor of physiology in New York found out by the researchers conducted on sheep and rats that a mother may refuse to accept her child if the secretion of oxytocin gets blocked in the female .