I like to think that if the supernatural didn’t exist, Charlie and Dean would’ve grown up together as best bros. Her mum and his dad wouldn’t have been around much so they’d get up to all sorts of geeky stuff together and break into teachers’ cars on the weekends just because. They wouldn’t ever get caught. Charlie’d teach Dean about computers and he’d teach her about cars, and they’d have epic Star Trek and Firefly marathons during the school holidays where they’d invite Cas and Sam and dress up. I think at one stage Charlie would’ve been taller than Dean and she’d tease him about it, a lot, with Charlie always saying, "Chin up, bitch." Then suddenly they’d both be grown and he would’ve been taller than her but she’d keep saying it because, you know, sometimes he just needed to hear it anyway.