Some of the modified Newton Laws

Universal law:
                            Love can neither be created nor be destroyed only it can transfer from One girlfriend to another girlfriend with some loss of money

First law:
                           A boy in love with a girl, continue to be in love with her and a girl in love with a boy, continue to be in love with him, until or unless any external agent(brother or father of the gal) comes into play and break the legs of the boy

Second law:
                           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

Third law:
                        The force applied while proposing a girl by a boy is equal and opposite to the force applied by the girl while slap