Xingchen stills at the sound Zichen makes, but it is not accompanied by a flinch away, so he returns his lips there, a rush of I made him feel good threatening to take his breath away.

"I want you. I need you, A-Lan." He breathes in the warm scent of him. Back then, leaving was the hardest thing Xingchen had ever done. Harder than breaking his oath to his Master. Harder than gouging his eyes out to give them. But it's what Zichen had wanted then. What he had needed. What he had asked of him. So Xingchen did it. "I love you."

His lips shift a little, closer to the pulse. "What is it that you want? That you need?"

That was then. This is now.

And if the roommates walk in, they would be going to their own rooms. Xingchen might be the smallest, but it is still separate enough.