Back together or just friends.....?

My ex called one night and said she called just to be nosy about something happening in my life, then she continued to tell me what she was getting her and the kids for supper, then a night or so later she called just to tell me a new book was out by my favorite author. Then a night or so later she called to tell me she bought the book for me. Our conversations have gone from just what needs to be said to more chatty and a whole lot nicer, no fighting. She also said while talking to me that she doesnt hold anything against anyone anymore, and that she talks to me more then her friends. We have also started telling each other to have a good night or rest of the day. Am i wrong to ume that she wants to get back together? We have been apart for six months and the split wasnt very pretty, she was the one who ended it. The day after we broke up she called and asked why i hadnt called her all day like she thought i would. I also noticed when there is a new phone number on our cell bill she asks who it is. Sorry to repost just looking for as many opinions as possible