SKIZZERHANDS
The only reason I think the goo was PB is because they seem to have a emotional bond that neither of them really understand, and it would make sense, because in a sense PB would of saved her life or whatever from her being sick.
I also wonder what makes Simon so protective over Marcy, if that has something to do with the reason why he's with her or..?
Oh, so is what you are saying is that, that was the close relationship between them and everyone is coming to the conclusion that they were dating at some point?
I think Simon accidentally created PB or whoever that was and after he went insane he still visits Marcy because maybe he is subconsciously sorry that he wasn't able to protect her to the end
or
Remember when MarMar was telling Simon not to use the crown, maybe he's upset that he didn't keep that promise.
I wonder, I wonder.