boomerang wrote:Something had to have happened with Snape -- something bigger than feeling bad about setting Voldemort on James and Lilly.
i think he was in love with lily, so when voldemort went to kill them, he wasn't supposed to kill lily, she was to be left for snape. but she sacrificed herself for harry, so snape got really upset, the love of his life dead, etc, and since it was for harry, snape resents him for the death of lily.
just a thought...