What did an ex-partner say or do that made you stop loving them?

He revealed that the person he referred to as his ex-girlfriend was in fact his current girlfriend. His fiancé actually. And naturally he didn’t share that truth until he had gotten what he wanted from me. I’ll admit that it took a long time to fall out of love with him even after experiencing that kind of hurt. Still have love for the moron actually because he was sort of a big chapter in my life. But I hold onto the lessons way more than the innate care I have for him.