I kinda got a homoerotic vibe about Dumbledore from Deathly Hollows when they talk about his early friendship with Grindelwald, but at the time I figured that was just me approaching the novel with too much of a fandom mindset. I don't really have feelings either way about him being gay.

I like the character of Snape. He's morally muddled in a way you don't see much in children's literature. He's got streaks of good and bad in him, and his love for Lily can be seen in both a redeeming light and a stalker-ish one. He's also an asshole, if for understandable (but not excusable) reasons.