High budget:
-Dinner. for two at La Tour D'argent = about 400$ (with wine)
a little bit expensive...just for one evening
Middle Budget:
-nice jewelry -> that's ok, or Hermes Eau de toilette in a wonderful crystal bottle (about 400$ too..)
Low Budget
"walk along the seine, bring a picnic and a bottle of wine"
How nice, a VERY GOOD idea anyway