What is Love?

What is Love? 
Is it just a four-letter word? 
Is it complicated? 
It may seem at many times, 
Unlike music, you can’t read between the lines, What is love? 
Is it like lightning that strikes unaware, 
Or maybe love is like life, which is sometimes not fair,
Love is the feeling which helps someone to know,
Love is the passion that helps people grow.