Oliver Hoffman was curious about what Ruby Carter wanted to discuss with him. His intuition told him that it definitely had nothing to do with work, but it had to be related to Helen Blair.
How could he not know what Ruby Carter was thinking about him? Of course, he wouldn't pay attention to it. As far as he was concerned, why should he be responsible for others' emotions? It was her own business to like him; he had never deceived her, nor had he given her hope. If she was hurt by it, it had nothing to do with him.
He had only invited her to dinner once and paid a visit to her home. Naturally, this was not because he was interested in her, but rather he hoped to get information about Helen Blair from her, and even take a look at the place where Helen lived. However, Ruby provided little information, so he didn't feel like asking her out afterwards.
That was it. If she couldn't let go, it was her problem.