I really have no idea what to say here so I am just going say happy reading!

Dean 

You start chewing on your red hair. just the ends of it. Sometimes you do not even realize your doing it. He catches you doing while your doing research for a hunt or watching TV. He thinks it so cute. 

Castiel

You start putting your hands in his back pockets. He thought it was really strange at first but, eventually he grew to love it. And every time you do it he smiles which makes you happy to. 

Sam 

What ends up happening is you always hug him from behind. Scared him a few time especially after hunts but he grew used to it. 

Crowley 

He loves it when you go to meetings with him and, act all professional and fancy. You always manage to get the good guys to turn on his side. He really likes when that happens.