Dean is popular. He has friends. A rich family and full ride to any college he wishes to attend. People walk on eggshells around him, obeying his every command. Girls throw themselves at him, indifferent to the lack of passion he so often returns, because when he does take an interest in you, time stops and the world no longer spins.
Castiel is quiet. He keeps to himself. The polar opposite of Dean Winchester; golden boy of Stanford University, second only to his younger brother, Sam, and even that is debatable. Castiel notices everything, tending to stay away from people, but always polite and kind to everyone he talks to or passes. Not too helpful of clingy, and not rude, he's simply passing through the people around him, and music is the only the that truly makes him feel alive. It's what connects him to everyone else.
People don't change. Everything stays the same, until it doesn't.
When an archeology student accidently gets added in a groupchat full of f1 drivers.
Or
When Charles Leclerc falls for the stranger in the groupchat
social media & irl
(Updates every day or every other day)