He is a loner and a very serious man so the chinese girl had to take the initiative and shag him.
shareWho said he was shy? She caused him all kinds of trouble. He spends most of the first half trying to get rid of her. He probably wasn't thinking of her in that way.
shareHe wasnt shy he was just resisting his impulses of sleeping with her because it seemed like a bad idea.
He says later that he likes peace and solitude so a relationship with her seemed too serious and romantic plus she was conected to his client.
The OP speaks strictly from his own frame of reference, where money is required in any transaction he has with a woman.
He fits right into The Boys Club here.