There are many types of friendships that develop over the years. There are those that are "out of sight, out of mind" and are the people who only think of you when you are together doing something, and there may be a little discomfort when you get together after a long period of not being together.. And there are those that you may not see often and yet can pick up where you left off from last time you were together. These are what I consider "Sacred Friendshsips".  Everyone needs a few "sacred friendships" to make it these days.