At what chapter did WWX realise his feeling for LanXing(seme)?

SPOILER:












I would say he started to get excited and liked him already when they entered that barn and Wei Wuxian got on top of Lan Wangji as he whispered in his ear "er-ge" over and over hehe.
But for sure, by the time they and the other cultivators were in the Demon cave (lol) when Wei Wuxian said to LAN Wangji if he wants to join him in doing something (luring ghost to him) he was already starting to be in love with him.
When they reached Lotus Pier, WWX fell from the tree. Oh yeah, he was in love. He told Madam Yu and Fangmian Shushu that he hopes the two bows are marriage mows. And that they accept them as such. He owes them 1 more bow "the one to each other) to complete the marriage.
The man was SO whipped (more whipped than whipped cream) he was already marrying LWJ. By the time the. Bathtub scene happened, WWX was so in love but worried LWJ didn't have feelings for him. That misunderstanding broke my kokoro.
（/TДT)/

I would say he officially liked him at the rolling in the hay part.