Answer:
mirror-image
Step-by-step explanation:
Mirror-image perception: In psychology, the term "mirror-image perception" is described as a phenomenon that signifies an individual's propensity to see himself or herself, especially in the context of conflict, as opposed to that of another person with whom he or she is having or experiencing conflict. However, mirror-image perception is often considered as holding reciprocal and mutual views of each other.
In the question above, The given couple's experience best illustrates mirror-image perception.