I paloma deep into my mind and I pondered over this, and then it hit me. WHAT IF. Steve is Julien's lost twin brother? Maybe Julien's parents couldn't bother, o didn't care to take care of two children, so they sent one away. It's logically impossible for two people to look so alike! Unless if you're twins-I mean some brilliant mind could've cloned Julien...But I think Julien would remember getting cloned...unless if he was brainwashed.
I may not have much evidence other than looking similar thing, but I can't think of any other way. (except for the cloning)