Fallen Out of Love?

Have you ever fallen out of love with someone? It took me a long time to realise I had fallen out of love with my boyfriend of three years. Over the space of three months I lost my trust, and then my interest and passion for him. As a result, I became bitter and angry. I thought it was something I could fix, but even I knew how bad it was. I suggested we seek therapy, and he was on board with it. But I quickly realised, no therapy required that it was all just a misunderstanding and I had fallen out of love with him. In such a short time, after years together, I was shocked at how quickly it diminished. I felt trapped by our relationship, like holding a weight on my chest. Which explained my anger and irritation. I ended it with him, with no promise of reconciliation. But part of me hoped I was wrong. A year later, my ex tried to reconnect with me and test to see if I had any small smidgen of feelings for him. But I couldn't muster anything for him. I couldn't even consider him a friend. Even though I tried. I'd never fallen out of love before. So my question is, have you fallen out of love? How did it make you feel? What did you do to change it?