Trick question

So, one day my wife and I were just talking about our past. The people we used to date, and why we broke up. She knew that before I dated her, I used to date her cousin Amy. “so why did you break up with her?” she asked me. “The truth? well, I didn’t break up with her, one day out of the blue, she just broke up with me, she didn’t even say why” I answered.