We are not born on earth to hate or hurt each other, but to learn to forgive and trust each other and make our love relationship as wonderful as possible.
Therefore, in any relationship, if we resolve it in a way that allows it to evolve in the direction of love, the answer will naturally come to us.
We may have created various karmas and grudges in our many past relationships, but if we can effectively forgive each other for all of them, we will be free from such things.
We must overcome what has created the cause in the law of cause and effect.
If we can have an experience on earth to clear that up, and if we can make the relationship grow into one where we can love and trust each other more than before, we will feel that we have learned a great lesson this life.
Therefore, no matter how painful the relationship is, we must accept the other person and involve ourselves in the direction of loving and forgiving each other.