Of course Wei Ying is kind, and curious, and supportive. There is a reason, after all, that Lan Wangji has decided to make him his spouse. He can't wait to marry this man, who isn't at all deterred by the prospect of his husband currently being not altogether human, or maybe unable to satisfy him.

Worse comes to worst, he has hands, and a mouth, and thighs, and an overly-willing spirit. He is just glad that this is temporary, because he doesn't think that either of them would be willing to accept this in the long-term.

He places a hand on Wei Ying's wrist to halt him, but it's not maliciously. Instead, he guides his husband toward their bed, so they can properly get in somewhere comfortable first.