The Steven/Lauren stuff is just speculation from people on here. Nothing to say it will happen (though admittedly nothing to say it won't happen.) It's just as likely that Steven returns because he hears about the Devil Child and wants to confront Ian on the way he's covered for him, particularly given that he completely rejected Steven for what he did to Jane.
Also there's nothing to say that Steven will be sticking around beyond the end of the storyline they have intended for him, which means he won't necessarily have any sort of romantic involvement. If he does become a regular then I suppose it's more likely they'll have to address his sexuality at some point. I said in another thread that watching old clips of Steven with Stacey, it very much seemed to me that he was over-compensating and was actually gay and in denial. That's how the relationship read to me. But I wasn't watching EE at the time so maybe I missed some key scenes which revealed he had genuine feelings for women and not just men.
Originally Posted by Bored_At_Work:
“Ah damn it!!! I was hoping for a Steven and Johnny relationship!!”
Steven/Johnny could happen, though I doubt it. Ben/Johnny is the most likely direction they're going in.