A fake relationship for the sake of revenge had sounded like a good idea to Wanyin at the time.

So.... what exactly did Jiang Cheng and Nie Huaisang get up to while Wei Ying was getting Lan Zhan drunk? In at least one reality, the answer is: Wow. Just. Really, quite a lot. or JC and NH have drunken virginal sex and discover that they are exactly each other's type. In that order. or NH discovers that JC has an unusual physiology and proceeds to lock that shit down.

Lurking behind covered windows after curfew, all three of them are well on their way to passably drunk when Nie Huaisang lays his current volume down on the table, scattering peanut shells, and sighs. “I wonder what it would be like,” he muses, and Jiang Cheng obligingly makes an inquisitive sound and looks over. The book is open to a woodcut image of a man with a woman bent over his lap, her mouth around him, both of them looking as if they’re enjoying themselves immensely.

“I would still like to be kissed,” Wangji says, and his hand is very hot on Lan Xichen’s cheek. Perhaps one of them has a fever, or they both do. He opens his mouth to ask if they should open the window for some cool air. His brother kisses him as if that is what Lan Xichen had intended. He will not be sure, later, whether it was.