Lust Normally operates from the distribution from the hormones testosterone and estrogen, attraction by using the natural compound dopamine as well as neurotransmitters norepinephrine and serotonin, and attachment throughout the hormones oxytocin and vasopressin. For evolutionary biologists, each part of love has an evolutionary foundation: lust for encouraging sexual reproduction, https://www.youtube.com/shorts/uTDAtp7YWmE