the interpersonal matrix

For a long time, I've envisioned the state of relationships among individuals who know each other as a huge 2x2 matrix with either number or color in the cells indicating the warmth or coldness of the relationship. For my part, I like to keep my column as uniormly good as possible and I worry when cells indicate a bad relationship (pretty rare) or a recent encounter that was awkward. But it's frequently the case that I am friends with two people who  do not have a good relationship between each other. While not necessarily being a mediator trying to improve the relationship, I am dealing with both people who are not dealing well (or decidedly not at all) with each other. This is often very frustrating.