yesss, fiona is the opposite—self-assured, aloof, free-spirited, so i would maybe love if they just REALLY didn't vibe growing up without any actual reason (or maybe it's a small, petty reason, like one of them dated a person the other had a crush on in like, middle school)? fi also left for college and only came back last summer to take care of her mom, so maybe they bumped into each other when they were both back in town and actually hit it off as adults?