Severus Snape's doe Patronus in Harry Potter revealed that he had been in love with Lily Potter and was the one who helped Harry find the Sword of Gryffindor, but its meaning went far deeper than ...

he was always loyal to Lily. Snape's loneliness after losing her, his desperation to save her, his grief upon finding her body, and finally, his Patronus—still shaped like a doe in Lily’s ...