I have some friend troubles please help?

I know this person, and I can’t stand her. She is so narcissistic, she is always yammering on about her and how everybody likes her, but the truth is people find her kind of creepy. And she is always giving me her attitude. She calls me her Best friend, but I don’t see her as that. What do I do? I mean I’m definitely not perfect, but it kind of gets annoying.