Since Aziraphale's left, things for Crowley have become difficult. During the day, he drank whiskey neat, at night, black coffee. He stayed in the bookshop to cover the longing he felt, and then there was you, a regular visitor every day.

Your innocence was impressive to him, he already tried to start a conversation but he didn't want to corrupt you. You were attractive and sparked his interest, but it wasn't worth it if you weren't mature enough. You were perfect, but not for him.