"Very professional. Still, I think we hit it off. Might have some things in common."

Norton can't get a proper read on Dr. Pollock. He wasn't hostile to Norton's strongly hinted interest, but Norton can't tell if that was just professionalism as a physician or if it was affinity. Just like he can't quite tell if Dr. Pollock's warning was a threat or advice.

If he could seduce him, that could be extremely useful blackmail.