Charting Dumbledore's life before we knew him is always a good story. His relationship with Grindelwald which is only hinted at in the books (hint is too strong a word, it took JK to nudge us the right way) is such a melancholy one of love gone wrong and possibly never acted upon. But we know how powerful it must have been for Albus because of the man he becomes. He certainly knows about love.
I'm not sure why you turned this into a song fic. I don;t know the song, so maybe it means something pertinent to you, but in my opinion the lyrics didn;t add a great deal to the story. They emphasized some events, but I'm not sure they needed a great deal of emphasis.
Gellert felt like cool, crisp water while Albus had been dying of thirst, alone in a vast desert wasteland. It wasn’t just necessary for his survival. He needed more. He needed Gellert to survive. At least, that’s how he felt that summer.
I loved that set of lines; it was a very strong image, Aida.
Ah, and they kissed only once and when both were so much older. That's very sad especially as we know they won;t meet again, and how they both think about each other for the rest of their lives.
Good luck with the challenge. ~Carole~