In fact, friends can be divided into three categories. One kind is the so-called friends who can talk to each other. These people are in frequent contact at ordinary times, help each other when things go wrong, and often flash in their minds together. The second is ordinary friends. These people may become good friends in the future, and may not keep in touch for a long time, but they are the main body of friends. Generally speaking, when we first met, we can only be regarded as ordinary friends. However, some of these people hit it off, and some get along for a long time. The third category is once-in-a-lifetime acquaintances. These people are not friends in the original sense at all, but not as good as the saying goes, "Did you meet me in this life when you passed by 500 years ago?" So I still turn these people into friends and hope to meet again one day. Well, friends split up. Nature needs the first kind of friends most, but you need to be careful. The second kind of friend is essential and needs affection, and the third kind of friend is essential and needs affection.