Oh my god i got goosebumps reading this...and for me this is my headcannon. There is no way Sam would have stopped looking for Dean if he had thought Dean was trapped in purgatory. Sam just not looking at all is such a break from his character and its unbelievable. Something had to have happened with Sam during that year and I wish the show would expand on it.
Queer kids + Harry finding out part 2/2 // Harry Potter, hp, lavender brown, Parvati Patil, pavender, Ginny Weasley, Parvati x Ginny, Ginny x Parvati, deamus, dean Thomas, Seamus finnigan, Luna lovegood