Overcome with emotion, her tears of joy mixed with happy laughter gave away the answer to the perfect proposal. The next day I met them for an hour around the Eiffel Tower, hearing more about how they met, became friends, fell in love at a distance between Germany and South Carolina and then now the ultimate surprise proposal in Paris. Even now writing this, I can't seem to stop smiling just thinking of them and their happiness. 

Daily note of wisdom: Documenting love is a pretty sweet job.