Lust is fact, love is fiction.
Lust is biology, love is social.
Lust is chemistry, love is philosophy.
Lust enables, love forbids.
Lust is instinct, love is perception.
Lust is programmed, love is outsmarting the program.
In a modern world, we are restricted by the structure of the society. Our evolutionary insticts are being tightly supressed to live like a civilised being. Our reptilian brain is easily disturbed and it can bring out the animal in you. Our frontal lobe, recently developed area of the brain, controls and keeps this entire civilisation. Our legal systems, religions, philosophy, ethical judgements and thousands of stories we heard and believed, keep us stay ahead in this thin line of difference. We are outsmarting our biological program to stay with willpower, and that is the biggest conquest of human beings!