uh i love that. he'd absolutely be intrigued by that, especially if at any point she realized she's not human, he's a super nerd and hasn't actually spent any real time with aliens so they fascinate him in every way. also he'd be totally susceptible to siren singing, he's young and impressionable, lure him in and give him heart eyes, rumie~ she should definitely keep the princess thing under lock and key, that'll be a cool reveal at some point!