(I can not believe THIS is my first post here.)

I am assuming that you're young.
From what I know...girls that have guy-friends keep that guy as a friend.

But here's a way to find out if there's more than that possible...
If you spend one-on-one alone time with her.....do 1 of 2 things.

1. Simply and in an off-handed casual way ask her "How would you feel if I kissed you right now?" Because its a hypothetical question...there's no rejection there, which is what you're afraid of and why you're stalling.

"Asking her out" is very stressful and puts her and you on the spot.

If you really have not balls....

2. Simply and in an off-handed casual way ask her "How would you feel if tried dating each other?" Again...because its a hypothetical question...there's no rejection there, which is what you're afraid of and why you're stalling.

Good luck, chief.