Why do we fall in love?

Love is a purely physiological response with overly dramatisation over centuries by hopeless romantic writers/poets.

We need to breed. As female homo sapien, we only want the best for our potential offspring. That explains why physical attraction is important - we want to have a physically superior offspring that can survive better in the competitive environment (especially in future mating). Also why money is important. In elephants, the best male is the one with the biggest tusk. In human, the best male with the best look, big number in the bank account, big personality and loyalty.

Sense of loyalty and fear of losing our male partner (as we call it in the north) arise from almost thousands of years of evolution. After mating and producing offspring, like other mammals, female homo sapien normally take care of the offspring (breastfeeding, grooming etc). In order to do this, support from the male homosapien is very important. Therefore, it is important for human to have a emotional mechanism that leads to keeping the male homo sapien, not only after the mating season but throughout raising up their offspring, and growing old together.

The sadness or the phenomena of 'heartbroken' also arise from thousands of years of evolution. If homo sapien do not feel sad after losing or ending up a relationship with their partner, the offspring will lose as their parents will fight and separates so easily.

The end.