If your partner says something on the head of anger, then it is better not to miss that much. Many people speak a lot of anger over their mind, which is not their mind.
Recall the favorite moments
Try to remember your favorite moments, which both of them spent together.
Stay away from some time
In any case, if the relationship does not return to the previous place, then stay away from it for a while. Distance often deepens the relationship.
Talk face to face
Try talking face to face. There is more misunderstanding in phone or message. And talking in front of the eyes becomes a lot easier.