Le Rock
Note: If you plan on initiating a breakup in public at a restaurant, and are of good moral character, you should obviously be paying for the meal.
To give the person you're with a nice send-off, and prevent the likelihood of a scene, opt for somewhere fancy, like Le Rock. The Art Deco atmosphere is sleek and kind of stark in that Midtown power lunch sort of way - ideal for getting down to business.
Le Rock, 45 Rockefeller Plaza
[Photo courtesy Le Rock]