I would humbly sacrifice everything for Amare. I love that beautiful, adorable cat man. He may have my heart, even though I know he'd probably prefer the biological organ.
Lucian's nice too though. Favorite probably of those who are likely to potentially actually get routes. (Not trying to complain! Plotwise I think it'd be pretty hard to get an Amare route without it being AT LEAST once we're back in the underworld. Though even then, I don't think he'd be particularly interested. Alas...)