Communication is very important!
You know what can destroy a relationship with anyone? Lack of communication and misunderstanding! Before you jump to the final conclusion get your facts straight and make sure that it is correct instead of pointing your fingers and accusing others. And also when you are at fault apologize to the other person with sincerity! And also if the other person is at fault don’t nag to them that they did something wrong, why because it is really annoying.