See I asked my dog how he does it. He told me everyone is a friend until they aren't. Then you bark at them and show your teeth. Always trust your gut feeling. Always be good to the people you are bonded to. only sjw's want to nuance things. The friends that I feel the best around are the ones I try to plan things with. Then over time you are bonded. and you be good to the people you are bonded to.