An example of it may look like where one partner becomes upset or angry over harmless interactions with the opposite sex.
Such behavior can be observed during a disagreement such as deflecting the blame, playing the victim and unwilling to see the error of their ways.
A person who will constantly complain about everything and yet be unwilling to find solutions for it.
There's a fine line between constructive criticism and degrading someone. One should know the difference.
It could be as minor as neglecting your need for space and making you feel guilty for some alone time.
It may look like one partner often lying about their whereabouts or who they’re spending time with and not accepting accountability for it.
Such behavior is often reflected into actions like checking your phone or constantly invading your privacy.