How do I deal with this unrequited love? I think I disgust her?

I've liked this woman for a long time, and she found out about a year ago. She is biual but clearly was not interested, even though I am too shy and scared to talk to her. Looking back, she made a special effort to be extra nice too me, probably in order to feel like a decent person. But in hindsight I think it was killing her to be so kind when I clearly disgust her. For example, she would always move away when I was near, she would make quick eye contact when I walked past her in a cold and "disgusted " manner ( that's all I can describe it as). I feel so self-conscious now, convinced she hates me. I HATE that I have put myself in such a position to feel so vunerable and wish I had never revealed my feelings, but what's done is done. I don't know how to move on from this, my confidence is shattered. I know how it is to feel repulsed by someone who has a mive crush on you-you feel pity for them-but now I am that person! Can I ever be happy again?Should I keep out of her way from now on? THanks x