interesting people have a harder time staying in a relationship with one another because they change more. in committed, monogamous relationships, it’s important to stay within a certain degree range of difference of your partner. if you and your partner inhabit a 45-, 60-, or 90-degree arc, you share enough in common that you can continually coalesce around values, conversations, and actions that nurture and strengthen the relationship. in those ranges, there is enough room for both individu...