Search Results: getting over an ex feelings

I dated Kate throughout most of college. We had an on and off "relationship"during the last year. We were essentially a couple without actually being one. She had definite feelings for me during this time, but I wasn't able to commit again, since afterall, she was the one who ended our original relationship. She had regretted ending it after a month, but the damage had been done. We both still had feelings though, and this led to the confusion of the last year.

At the end of the year she became mad that I was getting very close to a girl. She was very angry and a week later was talking to another guy. Remember we weren't "dating", so she didn't tell me. I wanted her back and made it clear during this time. Two more weeks and their dating! For the next couple months I pleaded with her to come back. For the most part she was very respectful and kind in her responses. She wouldn't talk to me over the phone so this was aoo texting. Now we both initiate contact and make jokes or shoot the wind every few days. During this time she also moved states away to Maine, away from both her new guy and myself. Long distance after a few months of dating when she couldn't stand to be away from me for a few weeks at a time. She would breakdown... Hmm.
So I'm trying to figure that out, why is she talking to me? She just started a new relationship, and she dealt with my shit all through the beginning of things. I assume she has kept this all from him. She has moved away. She has made it very clear she has moved on and is happy, but says she doesn't know what the future holds with us when I ask. She kept stating that basically she is happy right, and that fact is enough for her. I find it hard to believe she wants to be friends with me after this all. New bf and moved to Maine? I don't know why you would want to try to be friends with an ex

Yet she keeps contact... Am I plan B now? Any thoughts? Does she really want to be friends? What should I be doing right now?