4. Buy roses for your love
This one is specially for men. Buy a dozen roses for your sweetie, hide them in different spots of a place like a park or a mall. Invite her and hide in some nearby spot from where you can watch the proceedings. Arrange a person to hand over a rose to her as soon as she arrives. Attach a note to it informing her where to find the next rose. This should be the case with each rose and the last one should lead her to you waiting with a bouquet of flowers. You should take the authorities into confidence for this plan to work out smoothly. Thereupon, treat her to a sumptuous lunch/dinner.