Is it normal to hate your best friend?

Okay, maybe I don't hate her. But, she's beginning to grow on me in a very negative way. She's too nice. I'm not exactly the Brady Bunch type. I used to love that about her. Now, it's annoying. I don't have another word for it. It's kind of rough because we have a mutual best friend. Now, I can hang out with her and b.s. my way through the time we have to spend together, but I feel like if I keep trying to avoid her, I'm going to strain my relationship with my best friend that I actually like hanging around with. I'm starting to see my future and how I'd like it to be. I'm starting to see who I want in it and who I want to leave. I'm not sure if the pros outweigh the cons here.

-Again, a horrible best friend.