We create karma, good and bad, in our relationships. (Friendships, spouses, parent and child, etc.) Say two people were in a relationship. Karma was created between them in the relationship. (In addition to the karma generated from all their previous existences together.) One person was on their 105th existence, and the other on their 108th. Since the person on their 108th existence would not return, how would the karma generated in this relationship balance itself out between the two souls?