When did you realize that love alone isn’t enough to sustain a relationship?

The title says it all. Here is my story My ex was super rich; she knew that I did not have the kind of money she had (basically, her father had 🙂). Also, she was from a different caste. She told me that she loved me. Even though I liked her, I tried to back off because I knew this relationship would have many problems. She promised me that she would stand by my side if money or caste became an issue. As the relationship progressed, she became toxic. One day, the unthinkable happened. During a fight, she asked me to send a screenshot of my bank balance. After she saw it, she asked, “Do you think you can get married with this money?” (Who keeps all their money in the bank anyway? It might be invested somewhere. The funny part is that she was a finance major 😝). This actually shattered me. Also, she never fulfilled the promises she made when we started the relationship. Then I began questioning many things and eventually realized that love alone is not enough; after a few months, it was all over. Feel free to share your stories