Nothing stays the same, including us. We change and grow over our lifetimes—thankfully. And often, our longest and dearest friendships need to change as well, in order to keep up with who we are. However, the process of changing a long-term friendship isn’t usually an easy one, and sometimes, the friendship doesn’t survive. Sometimes the friendship can only be what it was when we were—or were willing to be—someone else. Liza met Callie when they were college freshmen, and they quickly became best friends. After graduation, they both got jobs in New York and lived as roommates for the majority of their 20s. Eventually, they both married and built families, and they ended up living in different cities. But the friendship remained strong. After 38 years, they had a lifetime of shared history, and Liza had considered Callie to be one of her most important and dearest friends. But then, …