I did something similar, actually. I recently got in touch with a very old classmate and she got insanely hot since I last saw her and I had dreams of us being together again and I had feelings like I wanted to spend the rest of my life with her, but of course, Ill never get to...
Edit: It sucks more because she also admitted she liked me, I was the first guy she really liked. Such a shame, I always liked her too...