I say move on asap. I know it's hard, but you need to listen to what she told you and believe it. It was probably hard for her to say, but she said it.
She never had those feelings for you. Friendship maybe, a dream of some life maybe, but not the deep stuff.
I have been there. My ex married me because I was the stable nice guy. Not for the passion of it all.
Make yourself happy. You only live once as far as I can tell. Being miserable cuts time off the end of your life. And as you leave, watch her change. (For the worse)