Is it possible to rekindle a friendship after a break-up?

I had a close friend and we had a disagreement 7 years ago which led us to split up. I had become a mom and she was single so we just had different interests. I got mad at her at the time and told her she was being immature (for a good reason). Anyway, after not seeing her for 7 years, we crossed paths again. We went out for dinner and all went well. I even apologized for harsh words I may have said and vice-versa. Then we met a second time and I felt it wasn't quite the same. There's was some coldness there. Any insight on this? I'm not sure if I want to keep this friendship or not.