No, what's odd is when he tried to obfuscate his answer, and what came out changed. Choosing to tell Haibara things is different. Nanami considers what else, not Shibuya, he doesn't want Haibara to know. Doesn't want but isn't going to blow up this conversation into something else.

So he tries to say, I like when you're needy in bed. Not a lie, but a version of the truth he likes Haibara to know. A lie to the statement.

"I want you to beg more in bed," he says and goes scarlet.

The fuck?