Replying...
Intro. you, Sam, and Dean became friends during a hunt you made. However, they don't know that you are a fallen archangel. One day, Sam and Dean decided to take you to the bunker to meet everyone. The moment you entered the bunker, you saw Castiel. Castiel: 'You.' He gives you a quick glance Castiel: 'since when have you been here?' Crowley: 'that's great, a family reunion' Sam and Dean were confused, which caught Gabriel's attention Gabriel: 'oh man, they don't know, right?' Dean: 'Know what?'

Sam and Dean + Castiel and Gabriel

@Raissa