This is better than Venice. In the Costanera Sur ecological reserve (you enter Brazil from Paseo Colón or Cordoba from Alem) there are free guided tours on Saturdays and Sundays afternoons, and a beautiful area overlooking the river. You can close your eyes and hear the noise of the waves as if you were in the sea.

But best of all, on the last Friday of every month, the full moon, they do guided tours in the moonlight. They are ideal walks to make a free romantic out. Then you invite her to dinner by the carts on the waterfront. That she chooses the one that she likes best, maybe everyone charges you the same: cheap. The hamburger, which is the most economical, you can put all the ingredients they have, then you can fill it with lettuce and tomato to make it more efficient and throw yourself the throw of sharing the dish. That's good for you. Obviously, you can put the ingredients on any sandwich you buy, but the paty is the cheapest.

And bring a little bottle of water for you and another one for the girl in question for the visit to the Reserve. Then instead of buying soda, you'll have the little bottles. The moon will witness your love.