Why we fall in Love?

This is one of the difficult questions on this world and for different people this question can have different reasons. Still there are few things which remain common for all us. One such thing is that we all want to fall in love and we all want to taste it ourselves. This is the reason why despite so many difficult conditions people fall in love and this trend is bound to continue further. Therefore, we can say that origin of love is from our inside and we all need it.