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This is my fourth attempt at writing this in the shortest way possible:

Fate or a strange coincidence made me meet my old friend again. She was invited by my friend's wife for his birthday and I was supposed to help her get a gift. When we met at the mall, we were a bit surprised, but we didn't hold any grudges. We went for a coffe and we cleared up all the misunderstandings that ruined our friendship. We realized that we were both being manipulated by my ex-girlfriend (her best friend).

We went to the party together, making quite the entrance. After explaining everything to other people that we didn't really hate each other, we spent the entire evening together, laughing and catching up.

As I was driving her home, we both confided that we weren't looking for a relationship, but at the same time, we were both having the most fun we'd had in a long time. Then I invited her to see Miyazaki's new movie for a friendly date and she agreed. I'm really looking forward to it.