The hero gets shot protecting the heroine vs. the heroine gets shot protecting the hero: Which is more romantic, more compelling to the plot?
6 Common Male Archetypes: Beast, Charmer, Neanderthal, Ruler, Second Son, and Slave/Prisoner of War
When a writer creates a hero that's too many things, she has to fill the reader's expectations for that hero, plot-wise and romance-wise. Juggling too many and fitting them all in one book is difficult—though not impossible—and makes the story and the hero seem over the top.
A heroine in disguise sleeps in the same room as her hero, who thinks she's a man. Also, when the hero discovers her true gender, he walks in on her naked.
When the hero really really wants the heroine, and intends to have her, yet while waiting for his chance, has sex with other women and later swears, "none of them meant anything."