Disagreements and petty arguments happen in all types of relationships. How you deal with them is what will either strengthen your bond as a couple or slowly start breaking down that relationship. Taking accountability requires self-reflection and internal honesty. It requires you having emotional intelligence and biting down your ego. It's not about blame, it's about solutions and prevention. At the end of the day, we just one someone we know with certainty has our backs when it counts. It's called trust and it's called respect. Learn the mental process and perception you need to gain to avoid such failures in your relationship.