cut yourself off for 6 months. That's the ONLY way to do it. Go see other people. Don't make a point of avoiding her but DON'T make a point of seeing her. She's fucked up by saying "a part of her will still love you" because now she's got you thinking you still have a chance.
It sounds like she's trying to be nice about the whole thing but has no desire to get together. If you're in your glorious teens then you can attribute crazy hormones to your ups and downs about things. it'll be hard to get over her (I'm still sore after my first GF dumped my ass to pursue another guy) but it'll happen. You'll eventually find a nice girl that wants to be with you and is absolutely positive about it; None of this "i don't know" crap.
Just hang and there and keep us posted on how things are going. When you're feeling crazy go running. That always has helped me. Or exercise or stop by a friend's house.
best of luck and remember things will work out
