A lot of us have probably had a friend who didn't really seem to be that close to us or that concerned about our well-being, and sometimes people have tried to just overlook these so-called friends' behavior and stay in denial about the situation. But these types of friends should never be overlooked or excused for their bad behavior, because in a lot of cases, they are miserably jealous people who only want to see other people fail or go through pain.
It's not wise to think that every human is capable of forming a friendship with you, because some people are just too emotionally and spiritually void to handle that. And I don't like the term "frenemy" when it comes to describing these types of people, because I feel that either a person is going to be a real friend, or a bad enemy. There is no in-between.