In Pet Society, do you have to add someone as a facebook friend in order to add them as a friend in the game?

[:)]

I'd rather not add a stranger to my facebook. Is there a way to only have someone as a pet society friend but not a facebook friend?

[Jonzz]

Yes, your friends in Pet Society are your friends on Facebook. Once you add a new friend on Facebook, he or she (provided he or she plays Pet Society also) will be automatically added into your Pet Society friends. So there's no way to have someone as a friend on Pet Society but not on Facebook.