A natural man is a product of genetical, physiological, environmental factors. Though we have the will to learn and unlearn certain behavior. But most time we allow the sentiment in our heart to blind fold us and we give ourselves to the learning of bad and negative behavior over the good and positive ones.
When the loved person do things wrongly, we try to give reasons to cover them, let the unloved one repeat the same thing, the whole world will hear about it.
The balls are all in our curt, we can decide to do whatever we like, but let's us all ensure it proper per time.