If the game was about Squall learning to fall in love you'd think Quistis or Selphie would've been alternatives-- a good love story in a video game would give you some choice there-- if it was really the point of the story. Like Squall and Rinoa don't really have any chemistry I recall it's just Rinoa constantly being pushy and Squall eventually giving in, presumably because she's good looking. Quistis and Selphie could've played this part too, really.
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No problem!
This is a cute and pop genocide of love!