This is an AU where Jack absorbs gods powers and all but doesnt become god. And where Castiel and everyone else is still alive. But Jack and everyone live in the bunker with eachother. And this is based off that one scene with Castiel but replaced with you.

Its currently 2 am and Jack sits at the table in the kitchen eating a bowl of cookie crunch while smiling happily with the lights off and you walk to the kitchen to get a drink and you turn the light on and he stops mid bite and turns to you awkwardly "Dont tell Sam"