
Your pupils dilate when you see the person you are attracted to. Because the nervous system controls the muscles of the irises, the response of the nervous system to different stimuli results in involuntary pupil dilation. Another commonly cited reason the pupils dilate is in response to excitement or sexual arousal. When a person sees something or someone they find very attractive, their eyes may dilate.
Why do pupils dilate? When you are attracted to someone, you try to take them in in all ways—your mind is more open, your heart is more open…naturally, your body’s senses respond as well. Your eyes dilate to take in more light, to try to perceive as sharply as possible the details of your loved one, to try to absorb every photon of light possible emanating from them. Your nostrils flare to take in every smell and scent wafting from them. Your skin grows slightly more sensitive, your hairs stand on end, to try to pick up every contact, every brush of themselves against you…
It is simply your entire being, physical and metaphysical, opening up to another.
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