Slowly Swapping: It is Jon's House...Well..Sort Of

When they arrived at Jon's house, he paused. "I thought we were going to..." He paused a second time. "Which one of us lives here?" "I do," Karyn said, using her key in the lock. They headed inside. "Hi, Mom...how was work?" Jon looked up...but it wasn't his mother he saw. It was Bethany Black. She was dressed in business attire. Karyn's mom was a housewife. His mom had a job at a law firm. "Fine, dear," she said.