You can often find this, along with other works by the author, through Amazon Kindle Unlimited, or you can check for the ebook through your local library's Libby app.
The Temporary Wife by Catharina Maura, part of The Windsors series, follows a contractual marriage arrangement that turns into a real romance. The story explores themes of forced proximity and growing affection between the main characters. The Temporary Wife by Catharina Maura (ePUB)