Nathan: Was he even real?(spoiler for S1 To S4E4)

Nathan: was he even real? For those who don't know who Nathan was , Nathan was Sara's brother. They had their own place . Sara worked at the diner, while Nathan took care of the animals. In season 1 we never saw much of Nathan, we only saw Sara. The times that we did see Nathan it was him talking to Sara. We never see him interact with anyone else beside Sara. We don't see how Sara and her brother came to town . We only hear about when the story is told from Sara. We heard so little and saw so little from Nathan that I truly believe that Nathan was a ghost, or was Sara's imagination. But since the town people knew Nathan he must have been real. Then it got me thinking about How Sophia came to town with her Pastor father. How the man in yellow controls the narrative. The man in yellow could have been Nathan disguised as Sara's brother Nathan. Does anyone remember the story Sara told about how she came to town? Didn't Sara say she didn't speak / or hasn't seen her brother until he showed up and saved her from a abusive boyfriend? I don't remember if Sara was in the hospital, or some other place where he saved her. I just remembered that Nathan saved Sara . But that reminds me of the man in yellow when he was talking to the pastor while he was in a coma. If Sara was in a coma then the man in yellow can give her orders, and convince Sara that he is her brother saving her from an abusive boyfriend and bring her to From town.

I was wondering why Sophia wanted to be Sara's roommate. If the man in yellow was Nathan then it would make sense that Sophia would choose Sara . He was able to manipulate her once before.

We should take a closer look at Nathan. Does anyone remember seeing Nathan interacting with anyone beside Sara? I'm not talking about working, nor his encounters with father Khatri. I'm talking about actually interacting with people. Eating , drinking, talking with someone who is not Sara.

I would like to hear your theories on Nathan.

Comments, opinions and theories are most welcome.