This is spot on. Relationship dishonesty may be justified in numerous ways, but the willingness to deal in deceptions in relationships denotes compromises in integrity. The ends never justify the means, though those who have cheated or who sympathize with cheaters might try to justify otherwise. Feigning a mindset and lifestyle of monogamy while living its opposite is emotional fraud and deception. Cheating and justifying cheating by putting the onus on another person for compelling dishonesty is the hallmark of narcissistic abusers, and helps identify who they are.