Even if she had told me anything bad about you— [ He cuts himself off with a small whine, but forges through once he's caught himself. ] Ah, I wouldn't believe it. Wei Wuxian-san speaks too fondly of you.

[ because of course he got the whole rundown from his local neighborhood crow. ]

No one Wei Wuxian-san loves... can be a bad person, Lan Wangji-san.