Judging-Assumptions
We're always taught to not "judge a book by its cover," but deep inside, we all do. Whether we consciously or subconsciously make assumptions about others, we're judging them. Even if one doesn't feel like  he or she is "judging" another, he or she is. Assumptions are automatically made about another person and that is where the joy or interest originates from meeting someone new. As we get to know them, we will realize that the assumptions made are true or false. That results in dislike for one another, or possibly real friends that may stick around for parts of your life.