AU where part of dean goes to the empty with cas because a residual part of cas' grace was so intertwined with dean's soul that it could not be parted. so post-despair dean goes even more insane because he's basically split between two entities and experiencing both simultaneously
sam thinks he's going insane as a seasoned insanity recognizer (see: lucifer's cage) and he begs dean to get help. but dean lies and says he IS getting help, actually (aka pretending to be an online cishet widowed mother of 2.5 kids in the mommyblogger space. put a pin in that one. then put another pin on top of it for the 2.5 kids thing) but sam misinterprets that as getting psychological help. so technically dean DIDNT lie. but he also doesnt correct the issue either. and also since there are no more supernatural cases he just throws himself into solving real missing persons cases. not that hes compensating for anything. also all the while he has remnants of castiel's grace inside of him and is hallucinating in 26 dimensions. and actually love can get crazier than that
