Biz Bitch says: A year or so ago, no-one would have thought Britain's reigning royal couple would split or even cheat on each other. Now, however, it's become all a bit predictable. Constant media speculation has tarnished the once-golden pair's relationship, and no-one's sure whether they're really in it for the romance anymore. What we need is a good old tell-all interview on the telly. Go on, Posh, you first...