6 FUNDAMENTAL PRINCIPLES
Love and justice are the same
"Love and justice are the same, for justice is love distributed, nothing else."
There can be no love without justice. Consider any injustice – a child starving, a man arrested without charge etc. These are examples of a lack of love. If love was properly shared out, there would be no injustice.
As an affair is an injustice to the promised monogamy in wedding vows, there was no love to begin with, therefore extramarital sex is wrong.