Temporary Bride by Linda Ford

Lena Stevens has lived through more than her share of troubles. After losing her mother and father when she was young, Lena learned that every kindness came with obligation. Now a widow with a small child, Lena has lost the one thing she had left: her house. She has no desire to be a burden on her neighbor, even if the man was foolish enough to promise her late husband to watch out for her. But when propriety demands a marriage, Lena makes Anker vow to annul it come spring.

Anker has longed for a wife–but not like this. A forced marriage. A pretend marriage. He will do what he must to protect Lena and Charlie throughout the winter. But as days stretch into months, his admiration for the spirited young woman begins to turn to something else. Something more… Anker and Lena both had their reasons for wanting a temporary marriage. But when spring arrives, will they regret their vow to end the union?