Another trick is starting with a filling, low-calorie appetizer, like gazpacho or tuna tartare. This satisfies you on fewer calories, so you won't be famished and overdo it when your entrée arrives.

Once you realize where you splurge when sharing a meal together, set rules for yourself. Suggest ordering wines by the glass instead of a bottle. If he enjoys dessert after every meal, split one with him or have a cappuccino instead.

You can also bank some calories by carving out time for exercise before meeting up. Sneak in a sweat session while he's watching the game or during your lunch break. "Most people will eat better after they exercise because they're already feeling good about themselves and when you feel good you'll make better choices," says Antonucci.