Answer :
I believe the answer is: Experience.
As a couple gained more experience by staying in a relationship, they would most likely understand their partner enough to understand the things that could make each other angry.
So rather than acting on an impulse when they found their partner is in a bad mood, they could give them some space to vent.
As a couple gained more experience by staying in a relationship, they would most likely understand their partner enough to understand the things that could make each other angry.
So rather than acting on an impulse when they found their partner is in a bad mood, they could give them some space to vent.