At this point we don't know what the fallout is going to be between Stefano and EJ once he finds out his father has been lying to him all this time. It's hard to figure out if EJ pulls away from him completely or sticks around. If he does stay it will be impossible for Sami and EJ to be together.
It will be fascinating to see how Stefano worms his way out of this if he is able to at all. He can lie with the best of them but these things have a way of rearing their ugly head when you least expect it.
IF EJ feels himself being drawn back to Sami he'll have an obstacle. After the huge argument Stefano had with Sami in his hospital room, he'll move heaven and hell to keep her away from EJ.
Yeah, good luck with that! rofl