Life is a game of chess... We are pawns in the game of life.. Some moves can only be taken in forward direction. But sometimes we can be back to. So take all actions where you may have to go back to win the game of life..
The rate of change of intensity of love of a girl towards a boy is directly proportional to the instantaneous bank balance of the boy and the direction of this love is same to as increment or decrement of the bank balance