Oh, this was simply lovely. I liked the abstract way you wrote in, and the way you intertwined the three storylines was seamless. I generally shy away from Reg/Sev stories, as they generally make Sev too innocent and naive, but this was so heart-achingly perfect. I could see Severus peeking out of Sev, and Reg's regret over what Sev had done to protect him was just gah! hard to witness.
You managed to blend coming-of-age with losing innocence, throw in a dose of reality, and boom. Really liked this, love. Great job.