LAWSUIT: I BEDDED CARL'S WIFE WATERGATE sleuth Carl Bernstein - partly credited with forcing President Richard Nixon from office - has a new foe to battle. A man who claims he's a longtime lover of Bernstein's wife has filed a $16.4 million suit against the couple for branding him a stalker and having him falsely arrested. A police officer also is listed as a defendant. Jeffrey Silver, an investor in his late 50s and the father of four, claims he had a romantic relationship with Bernstein's spouse - former model Christine Kuehbeck - that went on until just five days...