I feel like Greed gets easily attached.
MC: *calls greed beautiful*
Greed: *Falls madly in love with her.*
Child: *voices admiration and envy of Greed's strength*
Greed: Time to murder everyone who ever hurt this child.
Seriously, he gave no fucks about anything going on for so long that people have been throwing virgins in a volcano without actually believing he actually exists because that's always been done. He now occupies a temple, bullied a sacred guardian into providing a maidservant, asked for wooing advice, actually interacted with humans, BOUGHT things, accepted refugees, and now he's off to conquer a country.