Jon should be a creepy possessive weirdo in the incest AUs. When he’s younger he’s a little terror to anyone who’s too close to his dad but whrn he gets older he’s snide and cutting and hostile. Gets angry when he sees anyone else have flirt with Elias. His father’s sex life becomes something of a morbid fascination to him. Spying on his father constantly, rucking up his clothes to look at him while he’s asleep. He finds his dad’s sex toys and steals one to use it himself, fantasizing about how Elias used it, the thought of someone other than him using his father’s toys on Elias making him both horny and deeply envious. Thinks that nobody would touch his father if they knew he had Jon. How maybe if he was round and filled with Elias’ child then everybody would see that Elias was Jon’s. That a little piece of his father was growing inside of him, that Jon would forever carry his father’s mark on his body, and then they would Know that they weren’t allowed to touch. To try and stand between Jon and his father.

I’m not sure he could articulate it, to be honest. I think he’d be full of a wild, overpowering swirl of emotions (anger jealousy love need loneliness possessiveness) and complicated feelings about love and sex and sexuality and he wouldn’t understand many of them or why they were happening or how they were connected. Just a constant, ceaseless awareness that Elias was his.