on Live Write Thrive:
Romance is a part of life, and so it should also play some part in our novels—if we intend for our characters to mirror real life. Even if you don’t write in the romance genre, don’t be too quick to dismiss adding the element of romance to your story.
However, just slapping a few romantic moments into a scene or developing a romantic interest to add flavor may not help your story. In fact, it could even sabotage it.
Depending on your genre and plot, your story structure is going to vary. As will the role romance plays in your novel. And this is important to understand.