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1940-94: After meeting Madame Maxime, Hagrid reflects on eir troubled sexual and romantic history, and wonders if this time, things will be different. (aka Hagrid hates it when people fetishize eir huge cock.)
Regarding the warnings: Young Hagrid is manipulated into unwanted sexual situations by eir fellow students, until Dumbledore teaches em about consent.
Edited November 2014 to give Hagrid gender-neutral ey/em/eir pronouns.