I get that you believe in moral relativism. I do not.
According to your logic, Hitler was justified in the holocaust, because from his perspective it was justified.
Would you say to a concentration camp survivor that technically they can't say that the holocaust was "unjustified" because they disagree with Hitler? Would you tell them "It all depends on an individuals perceptions" and Hitlers perception is just as valid as theirs?
Of course not.
But, when it comes to being betrayed by a spouse, you feel comfortable spouting this nonsense.
I understand the difference between understanding and justification. This is justification based on a philosophy of moral relativism.
