Because I like you? Just ask the NEUROTRANSMITTERS

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Well-being and pleasure are related to the release of so-called neurotransmitters (They help them also some HORMONES) which are substances that carry information between a nerve cell and the other. In fact, What if you are faced with something or a nice person? When we like something or we are in for a pleasant person, our nervous system releases dopamine, a neurotransmitter precisely, related to the feeling of pleasure and well-being, therefore,. dopamine, in particular, It has an action of mydriasis , ie does dilate the pupils of the eyes.
Looking at a person in the eye, and see the most dilated pupils, regardless of the light, could be a sign that the person who is in front, He is appreciating nicely us or what we're doing. The excitement before something or someone that we like and that makes us euphoric also frees serotonin, another type of neurotransmitter. These substances also affect our sweat glands. Here then, when we are face to face with someone we like… the sweat is a certainty. When something we like, we really like, yet, our brain releases hormones (I am another type of chemical messengers of our body). One of these is the adrenaline, Which brings us to have more desire to talk and communicate and seek contact with those we love. In human relationships, therefore there may be signals , consequential to the release of these neurotransmitters that can make us understand if the person with whom we are facing has pleasure to interact with us or not.
therefore, if who we face is not silent / in an instant , There can be only two reasons: or is a talker or incurable… he / we like us. If then dilated pupils or inadvertently run our own gestures (phenomenon of “mirroring” , literally: reflected ), means that we are more than pleasant and even tries to be equally, involuntarymind, imitandoci. All that is spontaneous and natural, It is due to our neurotransmitters. At the end, broadly, If you have a feeling of well-being to do something, attending friends , to eat, its, sports and more, do that helps your health ! But the whole can be relevant : what you like someone can not have any effect to any other…