This Q/A was taken from the chapter titled "All Things Wattys [2015]."
Q: How can you be romantic in writing romance without having an experience in romance?
A: That's why it's called fiction writing. Fiction allows you to pretend (to make stuff up), to use your imagination to invent or create worlds and situations that you might not have otherwise experienced yourself. For example, I've written a mystery/thriller where the MC has committed a crime and is in prison awaiting execution. Now, I have experienced none of these things, but I was able to create this story, nonetheless.
To have the ability to create such stories comes from many things: having and using vivid imagination, researching your subject in great length, reading other works in the same or similar genre, and placing yourself in the shoes of your MC to embody the things that character might say and do. You can use these same tips to write romance though you've never experienced it. You can write about the things you have fantasized or read or seen.