Ex back in my life?

[Santiago 17]

I had my first real bad heartbreak about 7 months ago. I got over it through time, this site, and NC. At the beginning of this month my ex and I started contact again through a random thing. I mentioned that I had something of hers that I was gonna toss unless she wanted it. She asked me to bring it by. I did and she asked me to just hang out and we did and had a really good talk. She admitted to a lot of the things that she did and also talked about the problems w/ her current relationship. She also tried to hook me up with some girl she knew, and I said no way, but the girl kept on contacting me so I gave it a shot. That didn't work out needless to say, but my ex and I still talk on the phone and through e-mail. When we do it is really good and we kinda vent to each other, but I am worried that it is a horrible train wreck waiting to happen. She told me that she told her new bf that we were talking, but I feel like she could not be telling him the truth. I mean if I was dating her and found some of the e-mails she wrote and the frequency of them I would be really worried, but maybe I am just paranoid. Anyways, I expressed my concern and suggested that we don't talk anymore, but I felt bad b/c maybe she is just looking for friendship. The contact has subsided a little, and that may just mean it was a temporary thing. I feel kinda guilty b/c I am getting something out of this. Is it really possible for ex's to be friends especially this soon.