After NC it went a bit fast.

My situation is as follows:
My girlfriend broke up with me at the beginning of February this year. Since then I only saw her the following weekend. And only then I discovered your site. Since that weekend I have not spoken to her. She tried to phone me once, which I did not answer. She send me a text message about a week ago, asking how am I doing? I told her I was doing very good, work keeping me busy and so forth. She later replied and asked if I wanted to meet up with her the next weekend. I ignored the 2nd text for a 4/5 days. After which I though that the 21 day no contact was over (even though I did send that one message). What was so difficult was the timing, because I did not get to the part where I am suppose to send her a message and then some more and work myself to a phone call and then the date. I agreed to the meet up and everything went well. I was as calm as you can get, even though I wanted to kiss her at certain points. But I remained calm and relax. Did not mention anything about the relationship. Just had some lunch and a friendly chat. When it was time to say goodbye, she asked me whether she has to contact me or am I going to contact me if we wanted to hang out again. I just replied, lets see what the future holds. I could see she was not very happy with my response. And she actually started crying. I gave her a hug and told her she must take care of herself. So basically I need your opinion on what to do next or where do I go from here? I do think that I surprised her with the way I reacted during our meeting, because I was not emotional or nervous, just tried to make her laugh a lot. I would really appreciate it if you could give me some advice as to where to go from here?