this isn't a research center, nor an institution of higher learning. its a discussion board.
love has an effect. it doesn't have an exact form that is seen with the naked eye. it doesn't come with careful observation. its not unique to a culture, a person, a time, a place, a species, a sex, or gender. it doesn't come into, or out of, style.
it can influence biochemical aspects of a person physiology. without it babies can physically and psychologically stop maturing, some even die. it exists assuredly just like electricity, or gravity,
poets, storytellers, religions, philosophers rave about it across centuries but science finds it rather a dull phenomena.