Does this girl like me?

I have known this girl for the past 6 months, we get along really well, if we fight we make up in 5 minutes. Soon i started liking her, and it increased as days went by. So she always hugs me, texts me, if i don't talk to her or reply to her she gets mad, she always hangs out with me while walking down the hallways whatever, when people asked her if we were going out, she would suddenly say "NO, hes like my brother". But she personally calls me by her nick names, sometimes "love, sweety, monkeybutt (lol), boo etc" So im confused, my good friends know i like her, and everyone thinks we like each other, so what should i do?