I Think Spinel And Steven Moment Is Just A Sibling Like Thing. For One Thing The Hearts In The Eyes Is

I think spinel and Steven moment is just a sibling like thing. For one thing the hearts in the eyes is likely just part of spinels heart like esthetic. That scene reminded of the show Dexters lab if anything. The big goofy sister and the annoyed little brother. Nothing more than that.

Also an entirely valid perspective of the scene and there’s nothing wrong with that. I personally find Stevinel adorable but seeing them as really close siblings works too

OR third option

it was an homage to Roger Rabbit and Spinel was just being cartoonishly goofy

:D