Two years ago, my partner left me for someone else. It was very unexpected and ugly, and we never really spoke again. I ended up shifting everything in my life so that I wouldn’t be reminded of the beautiful life we’d built together. I’ve actually managed to do this—I moved back home to be with my best friends, I’m wildly in love with someone else, and I’ve just started my own business. But still, I’m less happy than I was before. I think about what I would say to my old partner constantly. I can’t get over that I wasn’t enough for him. I hate that I can never cause him the pain he’s caused me. I’m so bitter. How do I move on?