I would like to share one of my real story.
A few years ago, I went to India to learn Raja yoga and I met a great mentor Gita. I respected her a lot in many ways until three weeks later something happened. One day, we went to a shop together and each of us picked up something, then she asked me to pay together because she didn't bring money with her and promised to pay me later. It turned out she never paid me back. Another two weeks later when I left, I told myself she wasn't as good as I had thought. But one day three month later, suddenly I realized it's all my fault, I made it by myself to bother. It's me to make the judgement that she took advantage of me. Maybe she did, maybe she didn't, It really doesn't matter what she was thinking at all. If I had believed she just gave me a chance to serve, I would have felt much grateful. Now she is even greater than before in my mind, since I learned so much from her.

So, it's more important how we think instead of other people's behavior.