In Bed with the Enemy — Janet Woods

Darcie Channing returns to Australia to find her house missing. Businessman Leon Price, thinking he'd bought it, has demolished it. When Leon and Darcie are discovered in bed together, Leon's woman, Helen, won't listen to his perfectly reasonable explanation. With Leon's plans for the future destroyed, logic tells him he should marry Darcie, but all she seems to want from him is her house back! Contemporary Romantic Comedy by Janet Woods; originally published by New Concepts