France is about to be downgraded

Which could explain why Sarkozy was so mad at Cameron. And why the French were lobbing bombs about how the Brits were in bad shape. When you have something you don't want people to look to closely at, point at the other guy and start yelling.  So now the cost of France's borrowing to fund the maintenance of the Eurozone is going up.  Along with cost of toting its own debt.  My question is this: how long will the marriage last if the cost of the bailout to Germany is appreciably less than the new cost to France?