What is love

mathematician: love is 1/0= undefined.
physicist: love is the force of attraction between two hearts,
chemist: love is the saturated solution of feelings.
bilogist: love is produced by hypothalamus.
philosopher: love is the concupiscence to rationality.
programmer: love is a bug of everything.
writer: love is the perfect word for similes and metaphors.
Emo: love is hatred.