Ex-Girlfriend advice?

Hello,

Okay after 2 years my gf basically said she is thinking of me of a friend than as a boyfriend and just didnt have the romantic feelings for me that she did. This was just weeks after we were talking marriage. She kept saying she wasnt feeling like she should be feeling.

Now this past week she said she wants to be friends and some friends of her tell me she isnt seeing anyone and calls me her best friend.

She has been poking me on facebook and even wrote me if I was okay in the earthquake which hit Southern california recently. Thats the only time Ive replied.

I am not over her and do want her back. I also won't wait for her if I find someone new.

My question is, how much contact should I have with her? i do want to talk to her, maybe talk her back to me, but then again maybe it intereferes with me moving on?

Any help would be great!