No, he continues explaining Lan sect rules to Wei Ying and then tells him he's pretty and then passes out again. 

"Okay, it doesn't look like he's actually dangerously alcohol-poisoned from... one cup of wine... but he is liable to pass out and probably should not fly a sword drunk so I'm going to go get him a room at the glassblower's house because they like me and will probably let him crash there. Lan Wangji, does that sound all right?"

He nods. 

She goes and asks the glassblower if her drunk friend can sleep it off at his place.

Yeah, sure, that's fine. 

...will Wangji in fact successfully find the house without incident if she just tells him he can crash there.

Yes. 

He will not, however, let go of Wei Ying's wrist. 

How does Wei Wuxian feel about this situation.

He's sort of bemused but willing to put up with it for the sake of getting Lan Zhan squared away. 

"Haha, I guess he doesn't really trust me out of his sight, huh?"

"Are you trustworthy?" she wonders, when she gets this far in reality.

"I guess I can't really say I am anymore." 

"Well, if you must get into trouble, please aim it away from my friend's house."

"When things go where I aim them isn't when trouble happens." 

"Oh?"

"I was very sure, before, that I wasn't going to lose control of my demonic cultivation. I was wrong, and people died because of it." 

"Do you know what went wrong?" she asks.

"In a general sense. I was--trying to do too much, all at once, and it worked until it didn't." 

"Not simple to fix. Oh well."

"I don't remember all that much from those days. The worst of it didn't start until after, but my memory's never been great." 

"I might eventually be able to give other people a memory like mine."

"Huh. That would be something. How does your memory work exactly?"

"I can remember everything that's ever happened to me, including what I was thinking about at the time. I can bring stuff to mind in the usual ways people try to remember things - I can come up with things that happened at specific times, or with specific people, or in specific places, or whatever, but I never miss anything answering the description. I can still sort of forget things if I'm distracted - like, I never cannot recall what I had planned for the day, but I might neglect to consider what I had planned for the day if I were caught up in something - I considered not doing it that way but I thought it'd make me less myself if I could never be fully absorbed in stuff."

"Everything ever? From before you got your memory like that?"

"Yeah! It wasn't like that at first but I worked on it more - wasn't hard, since practice counts for improving a power, and I remember things or try to remember things constantly - and now it's retroactive."

"Wow. Wouldn't that be something."