Had another dream about my ex-crush

I hate that I keep dreaming of him. I was so in love with him. I convinced myself that I was going to marry him. I thought he felt the same way about me. He flirted with me, would always pick me out in the crowd, and he would always say he loved how I looked at him. He rejected me because I'm not a Christian. If I were, I think we would be together. I just hate that. I am over the whole situation, but it feels like it haunts my conscience constantly. He'll forever be the one that got away.