Frenemy

A person who pretends to be your friend to get connected to other people you may know and then blows you off once they are connected to your friends. They are very smooth and everyone thinks that person is great until they are eventually traded up by this person for another "better" social connection. They are social climbers and usually the social "leader" in the group. No one wants to reveal this actual frenemy for fear of backlash from the rest of the group. The frenemy will actually put you in a bad light to other people behind your back without making it seem like they are talking about you and actually spill anything you may have told them to others without making it seems they are telling a secret. Be aware of the frenemy because they will have your friends alienate you to be their friend. They are fake and although you may be a smart one to recognize them, others may not and exude praise upon them until they've been tricked by the frenemy.