I think pups pick up on your vibes when a new person comes into the home. They are curious, sometimes a little guarded, but when they see your reaction to that person it assures them that they are welcome. All it usually takes is the new person to not force themselves on the pup, let the pup come to them on it's own terms, offer them treats and a belly rub and they will become best buddies.
Congratulations. I'm in puppy envy
