Classification of Friends

Ever since I was a child, my mother raised me to recognize and appreciate various
kinds of friends. I find that there are three different kinds of friends in this life. I classify them according to how well I know them and how well they know me. We encounter each of them everyday, whether in school, home, or at the gym. However, we rarely spend much time actually thinking about and classifying these people. First, there are the "pest friends"- general acquaintances. Next, there are "guest friends"- social partners.
Lastly, we have "best friends"- our true friends.
The first type of friend…