So an new girl came to my school. I thought kind of liked her and all my friends knew and teased me about it. Then one of them goes up to her and tries to get her phone number for me. I never asked him to (and she said no) and now thinks I'm a creep. So is there a chance I can get her to realize I'm not?

If she thinks you're a creep just for wanting her phone number, she seems to be a bit strange.
Get yo know her on your own, not through your friends.