I think romance is the little things that show you think about one another. Picking up a gift for someone, for no specific reason, just to see the smile on their face when you give it to them. Doing little gestures for them for similar reasons. Just hugging them and staying like that.
I think the reason I see romance as being largely unspoken is because I see it as having much more of a physical component, of it being about actions. I don't think it's quite the same calling up someone and asking if they want you to get flowers for them or doing it as a surprise, for instance.