There’s an essay under this read more. It’s a 3,850 word essay about the structure of heaven in a tv show. That’s all the warning you get. Sail on if you want to avoid supernatural meta, writings about heaven, or yet another response, however tangential, to the question, “do the events in Dark Side of the Moon Canonically establish Sam and Dean as soul mates?”
tl;dr answer: No.
hugely long answer: No. And here’s why: