Is it stupid of me to assume that Four was obviously A) with Abnegation, or B) factionless? Because if he was factionless, it seems like the kind of silly dramatic thing they'd throw into this book to try and impress me. And if he was Abnegation, it would explain why he pays so much attention to Tris, why her mom thinks he's familiar, and why he's so withdrawn and cold - especially about Abnegation. It would also be another of those silly dramatic things that they'd throw into this book to try and impress me. "Look! It's Four and Tris, a pair of Abnegation Divergent Dauntlesses!"
Oh, I hope they wouldn't actually do anything that pathetically predictable. No real published book would stoop that low, right? Please let me be wrong.