Mated To My Human Step Sister

"Mom, I am home," I said as I walked our small two bedroom apartment.
"We are in here, Sweety," My mom said
"We," I thought to myself as I walked to the living room. My mom was sitting on the couch with a man who looked to be around her age. He had blond hair and blue eyes. When I walked into the room, they both stood up quickly, letting me know the man was very tall, way taller than my mom, who was only an inch taller than me.
I was sure he had money because he was wearing a nice suit and black dress shoes. I looked at his wrist to see he had a nice Rolex watch.
"Um, I didn't know we were having company," I said.
"Sweety, I would like to introduce you to Jeffrey Jackson," My mom said
"It is nice to meet you, Lina. Your mom has told me so much about you," Jeffrey said
"Hello, Mr. Jackson," I said
"Please, call me Jeffrey," he said, and I looked at my mom.
"You said you needed to talk to me about something," I said
"Let's sit down and talk," my mom said. My mom and Jeffrey sat together on the couch while I sat across from them on a chair.
"I am just going to say this. We are getting married," My mom said
"What do you mean you are getting married?" I asked, shocked.
"Jeffrey asked me to marry him, and I said yes," My mom said.
"Hold on, let's back up a bit. When did this happen?" I asked
"Today. I asked your mom to marry me, and I am so happy she said yes," Jeffrey said
"I wanted you to come home because you need to pack your bags."