Personally, I like to be friends with everyone. Not that hard. You don't have to try to be bestest buds, and that's kind of odd if you don't know someone well. My advice, clarity, respect, and icommunication.
I don't truck with not knowing people, there's no excuse unless someone's just not ready to be an adult that can reason and work together. That actually weeds out a lot of potential disasters. Cooperation not competition.
“For an instant I think I saw. I saw the loneliness of man as a gigantic wave which had been frozen in front of me, held back by the invisible wall of a metaphor.”
― Carlos Castaneda, Journey to Ixtlan