Ha ha I ID with Dean because I'm the oldest sibling, and my baby sister is (when I'm not wearing my Wincest hat, of course!) the Sam to my Dean, for better and for worse. She understands me better than anyone else in the world and we just click together and she's in so many ways my best friend. But she's made some pretty serious mistakes and kept them from me, and I really understand that kind of suffocating-panic-love thing where your sibling's happiness matters more than your own and you almost hate them you love them so much.