Why would your ex say that she misses you and wishes things were different and yet...

when I added her as a friend on twitter she left my request hanging. didn't accept, didn't reject. nothing. yes we went through quite a bit. we had bad history. but I still love her and after we saw each other and met up after a year she told a friend she still had feelings for me. but she's in another relationship. why?
Why would your ex say that she misses you and wishes things were different and yet...
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