Unrequited love... Advise please

Basically I fell for someone deeply 2 years ago, she was my classmate and a good friend too me. When I fell for her I was scared of her hating me so I tried to cut contact, but I couldn't as she would frequently approach me and even before that she idolized me. When she found out she was like "I'm honoured" but I won't accept, she outed me by asking me out as a "prank".

Getting to the point, I'm transitioning to college she is in my options, I can't see her as a "friend even after 2 and a half years and last time when she knew she was akward. What do I do?

I tried to "treat her like everyone else" but I'm very friendly, nice and bubbly almost to everyone but I just can't interact with her as a friend I'm scared to look her in the eyes even. I remember I tried to act cold and indifferent in the past, but cuz im bubbly and extroverted everybody noticed and asked unwanted questions at school.

My question is how do I treat her like a "friend" if I'm honest to everyone and very obvious as in I can't exactly hide things? + I'm attracted to her still so what to do?