You should never have to say hello or goodbye. Even at work sometimes, and I know this is very unpopular, is that if I'm going to work every single day, I don't think you should have to hug people hello every single day when you come to work. I saw you Monday!
“Honest good humor is the oil and wine of a merry meeting, and there is no jovial companionship equal to that where the jokes are rather small and laughter abundant.”