Think about your closest friends and some that are not so close. Do you know how your “friends” are doing? How their hearts are? The spiritual condition of their soul?
For whoever you couldn’t answer this questions, it may be that you two know each other on a superficial level, and not on a personal one. We came to the conclusion that friendships are a difficult thing to maintain. It really does cost you to be a friend, and maybe that is why we may not have that many real ones.