Up in Michigan, by Ernest Hemingway. First published in Three Stories and Ten Poems (Summer 1923).
... Jim was asleep. He wouldn't move. She worked out from under him and sat up and straightened her skirt and coat and tried to do something with her hair. Jim was sleeping with his mouth a little open. Liz leaned over and kissed him on the cheek. He was still asleep. She lifted his head a little and shook it. He rolled his head over and swallowed. Liz started to cry. She walked over to the edge of the dock and looked down to the water. There was a mist coming up from the bay. She was cold and miserable and everything felt gone. She walked back to where Jim was lying and shook him once more to make sure. She was crying.
"Jim," she said. "Jim. Please, Jim."
Jim stirred and curled a little tighter. Liz took off her coat and leaned over and covered him with it. She tucked it around him neatly and carefully. Then she walked across the dock and up the steep sandy road to go to bed. A cold mist was coming up through the woods from the bay.