You think he thinks she's not?
I think he sure knows it now. But I also think she knew that proclamation was directly tied to the gravy train. And I wouldn't put it past a selfish hedonist to keep it to herself till she found another choo-choo.
As I noted earlier, she admits to withhold her opinion to avoid conflict. She also says he's known since finding a gay-friendly publication in her room, but does that mean they discussed it, or was he suppose to infer it?
There are too many open questions to be throwing rocks.