Yes, this article is about adult friendships and I don’t really consider myself an adult, but I still found these words relevant to my life:
By middle-age, people have likely accumulated many friends from different jobs, different cities, and different activities, who don’t know each other at all. These friendships fall into three categories: active, dormant, and commemorative. Friendships are active if you are in touch regularly, you could call on them for emotional support and it wouldn’t be weird, if you pretty much know what’s going on with their lives at this moment. A dormant friendship has history, maybe you haven’t talked in a while, but you still think of that person as a friend. You’d be happy to hear from them and if you were in their city, you’d definitely meet up.
A commemorative friend is not someone you expect to hear from, or see, maybe ever again. But they were important to you at an earlier time in your life, and you think of them fondly for that reason, and still consider them a friend.