Best Friends

Isn't a Best Friend suppose to be like some one who knows your past and won't judge you about your future ? Isn't a Best Friend suppose to be some one who don't yell at you for the most stupidest things ? Isn't a Best Friend suppose to love you the way you are and won't judge you for anything ? Well there's a girl that i knew for a long time and every time i ask her some thing she yells . She basically yells for every thing. When i try to talk to her and tell her why does she yell for every thing she doesn't listen and walks away . I try not to pay attention to her but she just gets to me so i yell back and i just walk away. But for now one I'm just not going to pay attention no more.