When the only bond between close friends is attachment, then even a minor issue may cause one's projections to change. As soon as our projections change, the attachment disappears, because that attachment was based solely on projection and expectation. It is possible to have compassion without attachment, and similarly, to have anger without hatred.
Good company requires only birth, education, and manners, and with regard to education is not very nice. Birth and good manners are essential; but a little learning is by no means a dangerous thing in good company; on the contrary, it will do very well.
What I know for sure is that if you can survive 11 days in cramped quarters with a friend and come out laughing, your friendship is the real deal. I know ours is.
I shot an arrow into the air, It fell to earth, I knew not where; For, so swiftly it flew, the sight Could not follow it in its flight. I breathed a song into the air, It fell to earth, I knew not where; For who has sight so keen and strong, That it can follow the flight of song? Long, long afterward, in an oak I found the arrow, still unbroke; And the song, from beginning to end, I found again in the heart of a friend.
"I can see nothing," said I, handing it back to my friend. "On the contrary, Watson, you can see everything. You fail, however, to reason from what you see. You are too timid in drawing your inferences."