Can you elaborate "being a couple in a shipping perspective". That one is hard to get for me.
I think OP meant like people seeing into a pairing like...hm...Soriku for example. They aren’t canonically together but people ship them because they have a strong bond.
In comparison, Xehanort and Eraqus actually gave each other flirty eyes, said flirty things in flirty tones, and devoted themselves to each other while some cute ass Scala music played and they even died and went to whatever KH heaven is together in each other’s arms with big ass smiles. It’s enough subtext to make people wonder if it could genuinely be textual down the line.