Always have a kite in the car to use spontaneously. Be sure to bring binoculars and a blanket. Do things that make you feel very much alive, things that evoke emotion, such as witnessing the green flash at Sunset Cliffs . You can have experiences together. You can't just wait for things to happen.
Romance usually includes gifts.
Going to a spa is another romantic gift. A new experience is a great romantic gift. One of the best romantic gifts is time spent together. Change of subject. But we like evenings at home.