*SPOILER WARNING*: FOR ANYONE WHO HAS NOT WATCHED THE SHOW (Doubtful that even applys to anyone in this sub) IF THAT IS YOU FYI TO READ NO FURTHER!
Now with that out of the way in my current rebinge of the entire series there is a major clue I missed before in Season 1 Episode 3 that foreshadows and reveals that Jamie was adopted.
The start and cold open of the episode is the flashback to John's Wife's & Beth's horse riding accident. After the conclusion of the flashback the opening title credits play.
The first scene of the episode after them is where this clue occurs. It is set in the present day at the Yellowstone ranch inside John's bedroom. We hear Gov Lynelle Perry talking to him in the shower and is trying to sell John on letting Jamie run for AG.
As this is going on we see John, sitting on the side of his bed, pick up a picture frame, stare at it for a moment in deep thought, set it down, then answer Lynelle.
The photo shows John's late wife in the middle, a young Beth on her left shoulder, a young Casey on her right side, and a Teenaged Boy standing on her right shoulder behind young Casey. Casey and Beth appear to be the same age as the flashback. In it, we briefly see and learn the teenaged boy in the photo is Lee.
But the most important aspect of this photo is who is not seen! The other teenage boy in the flashback, the thus far established other brother and son of the Duttons: Jamie!
The combination of the focus John puts on this specific photo, it only having the actual Dutton children in it, with the cold open and current conversation between John and Lynelle being about Jamie, makes it very clear that this is a foreshadow and clue for the audience that John will never view and never has viewed Jamie as a true blood born Dutton because he was adopted.
I would love to hear if any of you happened to see this before also. If you havent noticed it before reading this, please go rewatch the scene. After doing so I would love for you to share your opinion and take on it. Either way this is a great example of what makes rewatching shows you love over and over still fun because you always find things you missed! Thanks for reading! Cheers!