Girls do you think this is alright to ask her bestfriend...please answer!!?

Alright ive been seeing this girl we are both teenagers. Ive taken her on a date and hung out at a friends and both times have gone great. she said i am perfect and ik she likes me. I want to know if this is more than just a thing because i really like her but i dont want to waste my time just hooking up. She is very goodlooking so she always has guys hitting on her. Would it be alright to ask her bestfriend what she thinks of this, im assuming they talk about this stuff a lot so she can give me an idea. What do you think i should do? ask the friend or ask her