Xi Zirui has to expend some effort to get rid of Han Yu.
First he insists on joining him in the bath, which Xi Zirui vehemently denies. Then, he wants to be allowed to sleep over, a notion Xi Zirui quickly disabuses him of.
Finally, standing on the doorway to Xi Zirui's quarters he pleads, one last time, "Shixiong should at least give me a kiss, so that my heart won't ache so much from our parting."
Xi Zirui rolls his eyes at his dramatics, and pulls him inside by the lapels of his robe, just enough to hide him from view from anyone walking around outside, and plants a perfunctory kiss on his lips.
"There, sleep well."
Against his expectations, Han Yu actually smiles and goes on his way, throwing Xi Zirui one last delighted goodbye before leaving.
Xi Zirui watches him go with a complicated look on his face.