Remember in the first one how they shot ole girl for conducting business in the hotel? So winston not killing him like he would do everyone else is one give away. It shows that he cares about john. Then like I said the way winston talk to him, "Johnathan

" is like how a dad or father inlaw would talk to a son. And we really gonna act like john is gonna marry some random chick? Knowing him, he probable married another assassin who died while on a job, who is also winston's daughter. I'm reaching, but thats what I think.