Just because Wanyin believes Huaisang is cute and silly doesn't mean he's also one of his fools. He witnessed what happened at the temple. He had Wei Wuxian explain what the hell happened (three times) and what exactly the shrewd sect leader from Nie had allegedly done. Okay, it was possible by the third time he was just intrigued and hadn't legitimately needed it explained again but his brother didn't need to know that.

His mouth goes dry at the pretty way the other man bats his eyes. It is a bit embarrassing to admit how much lovelier Huaisang is than the woman he was just jilted by. He'd wanted an uncomplicated heir and had assumed a woman would be easiest, but as he watched Huaisang he couldn't help wonder...

No. It is the wine muddling his thoughts. He is just lonely. He has just been jilted in a very public way (even if he made it seem as though he did the jilting).

"Huaisang," he repeats with a small smile. "And what do you wish to call me?" He asks, not quite meaning his tone to sound as suggestive as it does.