Oh, man, reading those quotes was really amusing because not too long ago I looked closely at those same quotes regarding snape and lily myself xD
I had a sudden "zmg, Snape was in love with Lily and JKR's practically told us" one day and made a post (http://lunylucy.livejournal.com/16861.html?mode=reply). I think the only thing I can add to your essay is that Snape being in love with Lily being the reason for Snape's "change of heart" explains why Dumbledore hasn't told anyone (nobody's gotten anything other than Dumbledore's word that Snape is good, including the other professors and possibly the Wizengamot). It's too personal and Snape has obviously asked him not to do it. In book 6 when Harry finds out about Snape hearing the prophecy, Dumbledore does a bit of a hesitation, like he's about to tell Harry but then he doesn't.
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I had a sudden "zmg, Snape was in love with Lily and JKR's practically told us" one day and made a post (http://lunylucy.livejournal.com/16861.html?mode=reply).
I think the only thing I can add to your essay is that Snape being in love with Lily being the reason for Snape's "change of heart" explains why Dumbledore hasn't told anyone (nobody's gotten anything other than Dumbledore's word that Snape is good, including the other professors and possibly the Wizengamot). It's too personal and Snape has obviously asked him not to do it. In book 6 when Harry finds out about Snape hearing the prophecy, Dumbledore does a bit of a hesitation, like he's about to tell Harry but then he doesn't.