Wei Wuxian

Likely, that's where their disconnect comes from. Wuxian isn't afraid of much, and when he is, it's because it will bring him pain he isn't sure how to handle. The dogs that chased him as a small child are seen as monsters who would tear him to bits, and losing the people he loves is a blow he recovers from slowly, if he recovers from at all. Even death was something he'd welcomed when it came.

Perhaps Yu Ziyuan counts in that he feared her, but he didn't hate her. However, he also knew she would hurt him given the chance. Not that he blames her for the whipping, but.

"What kind of decision would that be?"

Wuxian offers a pat on the back. He really didn't want to make Huasaing sad. Likewise, he knows his friend hadn't meant it as an attack when he admitted his fear. It's painful, but that hadn't been Huasaing's intention. That helps.

"I still question your taste in men, but I won't be angry as long as you don't let yourself be corrupted."

He won't. Wuxian believes in him which is why he's more worried for Huaisang than about Huaisang.

"Be sure to remind him that a mark or collar won't be enough to assure I get revenge if he does something wrong."

Submissive or no, rules are more like suggestions to Wuxian.