Just a question

I also have the same answer like @MALUSE said, talk to each other. If it does not work, that means both of you are not ready to accept each other or not ready to surrender the ego. Understanding and accepting is very important else you just blame each other always.

Then tell him/her your feelings.

How about lower your ego? Instead of thinking first that you are the one who's been hurt, why not know and make up of how you hurt others? Then after they are cleared and emotionally stabled, then maybe its time for them to make it up to you, I guess. Surely they would do the same. Just need someone to submit first to understand.

Tell her you need to sit down and talk about the issue. Take turns. You go first. Be frank about what happened, and how you felt about what happened. A good person will not invalidate your feelings. When it's her turn to talk, do the same thing. Acknowledge her feelings. People need to be aware of their mistakes, otherwise, it will only keep on repeating itself.

Tell him or her how you feel. Communication is the most important.

Communication is key. No one knows your hurting unless you say something about it. Both you guys have to be able to openly listen to each. No relationship is perfect good luck

I will suggest you to clear misunderstandings..