The Phantom of the Opera by Gaston Leroux:
Raoul at once threw himself on his knees before her. He swore to her that he would go and he entreated her never again to withhold a single hour of the ideal happiness which she had promised him. She let her tears flow. They kissed like a despairing brother and sister who have been smitten with a common loss and who meet to mourn a dead parent.
Suddenly, she snatched herself from the young man’s soft and timid embrace, seemed to listen to something, and, with a quick gesture, pointed to the door. When he was on the threshold, she said, in so low a voice that the viscount guessed rather than heard her words:
“To-morrow, my dear betrothed! And be happy, Raoul: I sang for you to-night!”
He returned the next day. But those two days of absence had broken the charm of their delightful make-believe. They looked at each other, in the dressing-room, with their sad eyes, without exchanging a word. Raoul had to restrain himself not to cry out:
“I am jealous! I am jealous! I am jealous!”
But she heard him all the same. Then she said:
“Come for a walk, dear. The air will do you good.”