Man heart can beat after a lot of things in life like, wealth, material things etc. but one of the most important thing man heart also beat about is LOVE.
One true fact about LOVE is "you can never express ( act or practice) true love without it coming from the depths of the heart"... Love is not just for mere people or person, actually a lot wish to love but they can't express or practice love because they never love one thing which is loving themselves.
Before you can express love to someone you need to love yourself (self love) it is totally different from self centredness. True love can only be expressed by someone who love himself example : you won't hurt someone else with what will hurt you..
Love have some functions here you have