The best way to begin a harmonious relationship is to demonstrate respect and consideration from the start. This sets the stage for compromising on important issues later.
Signal, "I see you. I am interested in knowing you." Take a long pause and see if that interest is returned. Keep taking pauses until they respond.
Don't rush, stand over the other person, or use language they won't understand. Come to their level, make a friendly offer, and wait.
Interestingly, this is how counselors engage people in therapy and how to make friends with new dogs.
Respect is universal.
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