Ok dude, listen up.
Tell her. She may like you, she may not. If you dont all you will do is torture yourself with it. You will wonder and fantasise and rip yourself apart by it.
I dont mean declare unrequited love or anything like that - I mean ask her for coffee, bowling, whatever - just make sure she knows you intend it as a date. Oh and do it to her face. Confidence is attractive.
Yes she may say no, but she wont hate you for it. and if she does then frankly your better off