Really nervous should I ask her out? Does she like me?

I know its long but please just read it…its important

Oaky so I’m a guy I’m 15 (16 in 2months) in the 10 grade I started talkin to this girl that was my bestfriends girls bestfriend lol like she is 15 in the 9th grade like the prettiest white girl I’ve ever seen and at first she was like really stuck up but then we started hanging out and I started making her laugh shes like the coolest person like omg she so great I don’t know how to put it shes like perfect in everyway she likes the same bands and rappers that I like I’m light skin I like rock&rap but she likes football even though shes a cheerleader and like everytime I see her shes like miiikeee! Omg and jumps up to give me a hug and its the cutest thing I’m like 6’2 and shes 5’3 and she has to stand on her tipy toes to give me a hug =] she introducted me to one of her friends and was like okay this is the guy I was talkin about and shes like oh he is cute he kinda looks like t.I and chris brown ( I don’t think so) and she nodded her head although I have only hange out with her at lunch even though shes like preppy and I’m like hiphop skater - e or w/e we still hange out with the same gruop of people but today it was so weird we both just stayed after school today and talked to our friends or w/e but after they left we still stayed outside in the cold and talk for like 2 hours me her and one of her friends but herr friend was busy with anothe guy so it was basically just me and her for like 2hrs and when she had to leave her friend was like you guys should just go out already and she just smiled and asked me to walk her home I not sure if I shuld ask her out because I asked another one of her friends and shes like she kinda sorta going out with someone else and I don’t want to wait becuase shes might be moving in febuary so any advice =/