I don't see why it's so hard to believe that he's 17. I've seen several really young looking 17 year olds in real life; and if someone like Blouk can look older than he really is (no offense, you look snazzy in your suits ;) ), is it that much of a stretch that you can look younger? Obviously there's no proof, sure, but heck, even I don't look 18, but I still am.