While I was away on a work trip, my Mother-in-law changed our house into two parts. She asked me to pay $100k for the changes. I said, ‘Huh? But I’m not married.’ She replied, ‘Huh?’ The surprising truth came out, and her face went pale.

Carol reached into her handbag and produced an envelope as though she had rehearsed the moment. “One hundred thousand dollars,” she said calmly. “You may write a check or arrange a transfer. Derek explained that since the property is technically yours, you would handle the expense.”

I stared at her, then let out a short incredulous laugh. “Why would I pay you one hundred thousand dollars for construction I never approved?”

Her smile stiffened. “Because we improved your home, and because you are joining our family.”

“I am not married,” I replied carefully.

She tilted her head. “You are essentially married. It is the same thing.”

“No,” I said, feeling something cold settle in my chest. “It is not the same thing, and I am not paying for this.”

Carol’s eyes sharpened. “You will pay because as Derek’s wife you benefit from the renovation.”

I felt the floor tilt under me. “As his wife?”

Carol frowned at my confusion. “Yes, you married last year at the courthouse. Derek told me it was done quietly for tax purposes.”

I turned to Derek so quickly that my vision blurred. “Tell her we are not married.”

He swallowed but did not speak.