He asks her foot questions

Dr. Jackson Crane looked over his newly hypnotized celebrity. He'd had a crush on her ever since he'd seen her on Firefly almost a decade ago. And the thing he'd liked about her most was that her character liked to go barefoot.
"Do you like to go barefoot, Summer?"
"Sometimes."
He looked at her shoes. Sneakers that covered everything. Not the sexiest choice she could have made. Well, her tastes would improve with time. "Have you ever been with a man with a foot fetish?"
"Yes."
"Oh, always lovely when the patient has experience. Do you have a foot fetish?"