The use of emotional tags. A shiver of apprehension whispered over her skin . Apprehension shivered over her skin with a whisper. Showing an action, an emotional or physical response, provides more immediacy, more connection with the viewpoint character. Now we come to a tricky part.
Some readers hate bouncing back and forth from the hero to the valet to the cook to the chef.
Others enjoy a novel thoroughly only if the author gives them insight into what the secondary characters, and even the minor characters, are thinking. Choosing the correct viewpoint characters can be tricky. Every author has to decide whether or not too many viewpoint scenes from the cook will spoil the broth. And every author knows that whatever she chooses, some readers will disagree with her style of viewpoint. In most romances published today, both the hero and heroine are partners in viewpoint.